Answer: false
Explanation:
Copernicus said that t he rotation of the Earth on its axis caused the O A daily motions in the heavens. B phases of the Moon. OC retrograde motion of the planets O D eclipses of the Moon. O E motion of the Sun along the ecliptic.
The Earth and planets provided a comprehensive explanation for a wide range of celestial phenomena, from the stars and planets to the phases of the Moon and the retrograde motion of the planets.
Copernicus believed that the rotation of the Earth on its axis was responsible for the daily motions of the stars and planets in the sky. As the Earth rotates, it appears as though the stars and planets are moving across the sky, but in reality, it is the Earth's rotation that is causing this apparent motion.
However, Copernicus' theory also explained other celestial phenomena, such as the phases of the Moon. He observed that the Moon appeared to go through a series of phases, from new to full and back to new again, and he explained this as being caused by the Moon's position relative to the Earth and Sun.
Additionally, Copernicus' theory accounted for the retrograde motion of the planets, which was a puzzling phenomenon to earlier astronomers. As the planets move in their orbits around the Sun, they occasionally appear to reverse their motion and move backwards for a time. Copernicus explained this as being caused by the relative motion of the Earth and the other planets, and the fact that the Earth moves faster in its orbit than the outer planets.
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Which newspaper headline would be most associated with this population pyramid?
a Lack of Workers Lead to Business Slow Downs
b Funding Needed for More Public Schools
c Retirement Homes Overcrowded
d Large Working Population Leads to Traffic Jam
Option A is the most associated with this population pyramid news paper headline.
What exactly is a population pyramid?The population pyramid is a graphical depiction of a population's age and gender makeup. The quantity of persons in different age groups is represented by age structure, which is an important indication of population composition. A population pyramid (age structure diagram) or "age-sex pyramid" is a graphical representation of the distribution of a population (usually that of a nation or part of the world) by age groups and sex; when the population is expanding, it typically assumes the shape of a pyramid. No single pyramid can be declared to be the finest. Population pyramids are broader at the bottom and thinner at the top, where most births and deaths occur. To maintain its population, the base of such a pyramid must also be thin.
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In 1914 Germany was an ally of
Russia was an ally of
Which category did France fall under?
Which category did the Ottoman Empire fall under?
and
Answer: Russia was ally of France and great Britain
The Ottoman Empire came into World War I as one of the Central Powers. The Ottoman Empire entered the war by carrying out a surprise attack on Russia's Black Sea coast on 29 October 1914, with Russia responding by declaring war on 2 November 1914.
During World War I, France was one of the Triple Entente powers allied against the Central Powers.
how do scientists believe that an asteroid impact in the yucatan peninsula of central america caused a worldwide mass extinction?
Scientists believe an asteroid struck the Yucatan Peninsula in central America. by suppressing photosynthesis and obstructing the sun.
The more than 10-kilometer-diameter asteroid hit a shallow ocean and shattered the planet's crust several kilometres below the surface. It melted, evaporated, and shattered the carbonate and sulphate-containing Yucatan target rocks as well as ocean water. A crater with a diameter of around 200 kilometres resulted as a result. beginning of the Chicxulub Drilling Project in Mexico's Yucatan On December 3, a scientific deep drilling operation into the Chicxulub crater, which was created about 65 million years ago by the impact of an asteroid and is thought to have led to the extinction of the dinosaurs and other species, will begin on the Yucatan Peninsula in Mexico.
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Compare and contrast on voluntary and forced migration
Voluntary and forced migration differ in terms of the decision-making, destination, and reasons for the move. Forced migration is often traumatic and difficult for individuals and their families.
Voluntary and forced migration are two distinct types of movement of people from one location to another. While voluntary migration involves individuals or groups making a choice to move, forced migration involves people being compelled to leave their homes and relocate to a different location due to various reasons. Here are some of the main differences and similarities between the two:
Reason for Migration: Voluntary migration is typically driven by individual or group choice and factors such as job opportunities, better living standards, education, or family reasons. On the other hand, forced migration is usually triggered by natural disasters, persecution, political instability, war, or conflict.Decision-making: In voluntary migration, individuals or groups make their own decision to move, and the process is often planned and well thought out. Forced migration, however, is usually involuntary, and the decision to leave is made for them by external forces.Destination: In voluntary migration, individuals or groups choose their destination, and they usually have some control over where they want to go. Forced migration, on the other hand, often involves being moved to a location chosen by external forces, such as government agencies or international organizations.Preparedness: Voluntary migration often involves careful planning, including financial preparation and knowledge of the destination country's culture and customs. In forced migration, individuals may not have the luxury of planning or preparing for the move, and may be forced to leave with little or no preparation.Emotional Impact: Both types of migration can have significant emotional impact on individuals and their families. However, forced migration is often traumatic, as it involves leaving behind homes, possessions, and loved ones, and can lead to feelings of displacement and loss of identity.For more such questions on migration
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The series of processes in which rock forms, changes from one type to another, is destroyed, and forms again by geological processes is called: ________
The series of processes in which rock forms, changes from one type to another, is destroyed, and forms again by geological processes is called the rock cycle.
What is the rock cycle?Crystallization, metamorphism, and sedimentation are the three processes that are responsible for the transformation of one rock into another. By undergoing one or more of these processes, any type of rock has the potential to metamorphose into any other type of rock. This results in the formation of the rock cycle.
The rock cycle is an explanation of the relationships between the three different types of rocks and how the mechanisms that alter rocks from one type to another over time. Due to the cyclical nature of this process, the transformation of rock is referred to as a geologic cycle and, on planets that support life, a biogeochemical cycle.
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3. What does the word geology mean?
Answer:
study of earth, divided between physical and historical
Explanation:
What is the tenacity of a mineral, and how can it be described? Tenacity is the mineral's resistance to breaking, bending, or otherwise deforming.
Tenacity refers to a mineral's ability to resist breaking, bending, or otherwise deforming.
In other words, it describes how tough and resilient a mineral is under stress. There are several different terms that can be used to describe a mineral's tenacity, including brittle, malleable, ductile, sectile, and flexible.
Brittle minerals are those that break or shatter easily when subjected to stress, while malleable minerals can be bent or molded without breaking. Ductile minerals can be stretched or pulled into thin wires or sheets, while sectile minerals can be cut into thin slices with a knife.
Flexible minerals can be bent or twisted without breaking, but they will not retain their new shape once the stress is removed. Understanding a mineral's tenacity is important for identifying and classifying minerals, as well as for predicting their behavior under various geological conditions.
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Why is understanding the structure of the earth important in 5 ways
Answer:
We can learn to minimize our risks from earthquakes, volcanoes, slope failures, and damaging storms. We can learn how and why Earth's climate has changed in the past, and use that knowledge to understand both natural and human-caused climate change.
Explanation:
the area where we find the most active volcanoes are along the______
The name of the are is "Pacific Ring of Fire".
The further explanation tells us about the:
In South America, all active volcanoes are located in the Andes Mountain Range.
They cluster in three specific areas:
Southern Colombia, and Northern and Central Ecuador, some of the volcanoes are: Nevado del Ruiz, Cotopaxi and Chimborazo.Southern Peru and Northern Chile, some volcanoes in this area are: Ojos del Salado and Misti.Southern Chile, some volcanoes in this area are: Villarica Volcano and Osorno Volcano.For more questions like Pacific Ring visit the link below:
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what kind of tides would you expect during a new moon?
When the sun, moon, and Earth are in alignment (at the new or full moon), the solar tide adds to the lunar tide, resulting in extra-high high tides and very low, low tides—both known as spring tides.
There are three basic tidal patterns in the world: semidiurnal, mixed, and diurnal. A semidiurnal tide occurs when both high tides are roughly equal to each other and both low tides are roughly equal. A mixed tide occurs when the two highs and lows differ significantly.
This is the most common tidal pattern, with two highs and two lows each day and little variation in the height of successive high or low waters, and it is found along much of North America's east coast.
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URGENT
If there were two suns equally distant from the Earth in the north and south, what would the climate look like?
Answer:
If there were two suns equally distant from the Earth in the north and south, the climate on Earth would be dramatically different from what we have today.
Explanation:
With two suns, the amount of sunlight and heat that Earth would receive would be significantly increased, which could have a profound effect on the planet's climate and weather patterns.
At the equator, temperatures would be much higher, potentially making it uninhabitable. The poles would also experience increased temperatures, which could melt the ice caps and cause significant rising of sea levels.
The increase in sunlight could also affect the growth patterns of plants and the migration patterns of animals, potentially leading to changes in the food chain and ecosystem.
It's worth noting that this scenario is purely hypothetical and not based on any scientific evidence. However, it serves to demonstrate the potential impact that changes in our celestial environment can have on the Earth's climate and ecosystems.
Answer:
If there were two suns equally distant from the Earth in the north and south, the climate would be significantly warmer than it is currently. This is because the increased amount of sunlight would cause temperatures to rise and the presence of two suns in the sky would also add to the overall solar radiation reaching the surface of the Earth. Additionally, the increased temperatures would lead to increased evaporation and more precipitation, resulting in wetter and more humid conditions.
how do chemical and mechanical weathering work together to create sediment?
Answer:
Mechanical weathering creates surfaces for chemical weathering to take place
Explanation:
Chemical and mechanical weathering work together to create sediment, because they break down rocks, soils, and minerals through contact with the Earth's atmosphere, water, and biological organisms.
Chemical weathering involves the breakdown of rocks and minerals through chemical reactions. This can occur through the action of water, oxygen, carbon dioxide, and other substances. For example, when water reacts with minerals in rocks, it can dissolve them and create new compounds. This can weaken the rock and make it more susceptible to mechanical weathering.
Mechanical weathering, also known as physical weathering, involves the breakdown of rocks and minerals through physical processes such as freezing and thawing, abrasion, and impact. For example, when water freezes in the cracks of rocks, it expands and can cause the rock to break apart. This can create smaller pieces of rock, or sediment.
Together, chemical and mechanical weathering work to break down rocks and create sediment. This sediment can then be transported and deposited in new locations through processes such as erosion and deposition. This is an important part of the geologic cycle and helps to shape the Earth's surface and create new landforms.
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1. Pilihan ganda30 detik1 ptQ. Which North African ethnic group continues to maintain many of its nomadic and semi-nomadic cultural traditions?Pilihan jawabanEgyptiansLibyansMoroccansBerbers
The North African ethnic group that continues to maintain many of its nomadic and semi-nomadic cultural traditions is the Berbers.
The Berbers, also known as Amazigh people, are a North African ethnic group that have inhabited the region for thousands of years. They have a rich and complex history, with many different sub-groups, languages, and cultural practices. One of the defining features of Berber culture is their tradition of nomadism and semi-nomadism, which involves a lifestyle based on the seasonal movement of people, animals, and goods.
The Berbers have traditionally relied on pastoralism, the practice of raising and herding livestock, as a primary source of subsistence. This has led to the development of specialized skills and knowledge related to animal husbandry, as well as the use of different types of transportation, such as camels and donkeys, to move people and goods across vast distances. Many Berbers continue to maintain these cultural practices, even in the face of modernization and urbanization.
In addition to their pastoral traditions, the Berbers have also developed unique forms of art, music, and language that reflect their cultural heritage. Berber languages, which include Tamazight, Tashelhit, and Kabyle, are spoken by millions of people in North Africa and are recognized as official languages in some countries, such as Algeria and Morocco.
Despite their long history and cultural diversity, the Berbers have faced marginalization and discrimination in many parts of North Africa. In recent years, there has been a resurgence of Berber cultural pride and activism, with many people working to preserve and promote their language, traditions, and rights. Overall, the Berbers continue to play an important role in the cultural, social, and political landscape of North Africa.
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4. What do the countries of Southwest Asia have in common?
They all draw water from the Tigris, the Euphrates, or the Jordan River.
They were all formerly part of the Ottoman Empire.
O Their people all speak Arabic.
Their economies are all based on oil.
The countries of the Southwest Asia have They all draw water from the Tigris, the Euphrates, or the Jordan River in common,
What are the common characteristics of the nations in South west Asia?The nations in Southwest Asia, also known as the Middle East, share several common characteristics, including:
Historical and cultural ties: The countries in Southwest Asia have a rich cultural heritage that is rooted in their shared history, including the ancient civilizations of Mesopotamia and Persia.
Religious diversity: The region is home to a diverse range of religious communities, including Muslims, Christians, Jews, and other religious minorities.
Economic reliance on oil: Many of the nations in Southwest Asia have economies that are heavily reliant on oil exports.
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help m e pelaseseeee
Answer:
24)=A,25)=c
Explanation:
24) ans is A
25) ans is C
what is historic french port located on the english channel coast
Answer: Saint-Malo is a historic French port in Ille-et-Vilaine, Brittany on the English Channel coast. The walled city had a long history of piracy, earning much wealth from local extortion and overseas adventures. In 1944, the Allies heavily bombarded Saint-Malo, which was garrisoned by German troops.
Explanation:
PLEASE HELP BRAINLIEST!!!!!!!!!!!!!
Note that the causes in Dafur matched with their direct effect are given as follows:
reports of violence reach the international community → financial assistance sent to Sudan from other countriesunfair treatment of black Africans by Sudan's government → black Africans demand more representation in governmentJanjaweed militia, backed by military, attacks black Africans → thousands of deaths among black Africansdrought → conflict between black Africans and Arab nomads over land and water use.Who were the Janjaweed militia?The Janjaweed militia were a group of Arab tribes in Darfur, Sudan, who were accused of carrying out mass atrocities against black African tribes during the Darfur conflict in the early 2000s.
They were alleged to have been backed by the Sudanese government, and their actions were condemned by the international community as genocide and war crimes.
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Answer:
Reports of violence reach the international community → right here is what you put: financial assistance sent to Sudan from other countries
And an Unfair treatment of black Africans by Sudan's government black Africans demand more representation in government
Janjaweed militia, backed by military, attacks black Africans → thousands of deaths among black Africans
drought conflict between black Africans and Arab nomads over land and water use
But wait
Who were these people that me and that other brainly user is telling you about, well? Well:
The Janjaweed militia were a group of Arab tribes in Darfur, Sudan, who were accused of carrying out mass atrocities against black African tribes. There was war and havock such then, people. Bad times because of just the color of their skin in some issues.
Explanation:
What mountain range extends from the black sea to the caspian sea?
The Caucasus, also known as the Russian Kavkaz, is a mountainous area between the Black Sea in the west and the Caspian Sea in the east that is inhabited by Russia, Georgia, Azerbaijan, and Armenia.
The Iranian plateau and the south Caspian Sea are separated by the Alborz mountain range. It has sedimentary strata that range in age from the Upper Devonian to the Oligocene, with Jurassic limestone predominating atop a granite core, and is only 60–130 km broad. The Crimean Mountains, located in southern Crimea, the Pontic Mountains (Kaçkar Dalar), in northern Anatolia, the Strandzha, a tiny mountain range in southeast Bulgaria, and the Caucasus Mountains are the principal mountain ranges that border the Black Sea. The Caucasus Mountain Range, or simply the Caucasus Mountains, is the name of the mountain range that spans the Black and Caspian Seas. Russia, Georgia, Azerbaijan, Armenia, Turkey, and Iran all have territories in the Caucasus, a hilly isthmus of territory wedged between the Black Sea and the Caspian Sea. The 700 km (430 mi) long (Russian: aнал "враи") Eurasia Canal would run through the Kuma-Manych Depression and connect the Black Sea to the Caspian Sea. Currently, this path is occupied by a number of lakes and reservoirs as well as the shallow irrigation Kuma-Manych Canal. is sometimes referred to as the Caucasus Mountain Range or simply as the Caucasus Mountains. Russia, Georgia, Azerbaijan, Armenia, Turkey, and Iran all have territories in the Caucasus, a hilly isthmus of territory wedged between the Black Sea and the Caspian Sea. The 700 km (430 mi) long (Russian: aнал "враи") Eurasia Canal would run through the Kuma-Manych Depression and connect the Black Sea to the Caspian Sea. Currently, this path is occupied by a number of lakes and reservoirs as well as the shallow irrigation Kuma-Manych Canal.
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Describe 6 ways human activities affect animal habitats. Prescribe ways of solving these problem
Human activities affect animal habitats in various ways, including deforestation, pollution, hunting, climate change, land development, and the introduction of invasive species.
Deforestation destroys the natural habitat of animals, leading to their displacement, starvation, and ultimately extinction. Pollution from factories, vehicles, and chemical fertilizers contaminates water, air, and soil, poisoning animals and their food sources.
Hunting, especially for sport, decimates animal populations and disrupts the food chain. Climate change alters animal habitats, forcing them to migrate, adapt, or perish.
Land development, such as building roads and cities, encroaches on animal habitats, limiting their space and resources. The introduction of invasive species, intentionally or accidentally, disrupts the ecosystem and can cause the extinction of native species.
Solutions to these problems include reforestation, reducing pollution, implementing wildlife conservation laws and regulations, limiting hunting, adopting sustainable practices that reduce carbon footprint, conserving natural habitats, and preventing the introduction of invasive species.
It is important for humans to recognize the impact of their actions on the environment and make conscious efforts to protect and preserve animal habitats.
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subduction zones occur a what type of plate boundary?
the Subduction zones occur at convergent plate boundaries where two tectonic plates move towards each other.
the Subduction zones occur at convergent plate boundaries where two tectonic plates move towards each other. One plate is usually denser than the other and subducts or sinks beneath the other plate, forming a very deep trench. The subducting plate is usually an oceanic plate while the overriding plate can be either an oceanic or a continental plate.
As the oceanic plate subducts, it heats up and melts, forming magma. The magma rises and can trigger volcanic eruptions, leading to the formation of volcanic
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what type of bond results from the end‑on overlap of orbitals?
Answer:
sigma bond
Explanation:
This is Labro, a tiny mountain village in which country? A. Italy B. Portugal C. Peru
Labro is a tiny mountain village located in Italy. Specifically, it is situated in the region of Lazio, which is in central Italy. The village is known for its picturesque location, historic architecture, and beautiful mountain scenery.
Describe region of Lazio?Lazio is a region located in central Italy, with Rome as its capital city. It covers an area of 17,207 square kilometers and has a population of approximately 5.8 million people. Lazio is bordered by the regions of Tuscany, Umbria, Marche, Abruzzo, Campania, and Molise.
Lazio is known for its rich history and cultural heritage, and is home to many famous landmarks and attractions. Rome, which is the capital city of both Lazio and Italy, is a major center of art, culture, and politics, and attracts millions of visitors every year to its many museums, galleries, and historical sites.
In addition to Rome, Lazio is home to many other notable cities and towns, including Latina, Viterbo, and Frosinone. The region is also known for its beautiful natural scenery, which includes the Apennine Mountains, the Tyrrhenian Sea, and many lakes and rivers.
Lazio is an important center of industry, commerce, and agriculture, with a diverse economy that includes manufacturing, tourism, and service sectors. The region is also known for its excellent cuisine, which features many traditional Italian dishes such as pasta, pizza, and seafood.
Overall, Lazio is a diverse and fascinating region that offers something for everyone, whether you are interested in history, art, culture, or simply enjoying the beautiful natural scenery and delicious food.
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what does the presence of mud cracks and mud curls indicate about the rock's depositional environment?
They suggest a setting where the sediment was wet and later dried off. A tidal flat or flood plain might be such a setting.
What are the three depositional environments?An area of the earth's surface known as the depositional environment is where sediments are laid down and has specific chemical, biological, and physical properties. There are three different types of depositional habitats: continental, marginal marine, and marine environments.
What kinds of habitats are depositional environments?A depositional environment is a particular kind of location where sediments are deposited, such as a stream channel, a lake, or the bottom of a deep ocean. They are frequently referred to as sedimentary environments.
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which physical property is determined by the salinity and temperature of ocean water?
A mathematical function of temperature, salinity, and pressure known as an equation of state is typically used to calculate density.
What factors influence ocean water's salinity?Evaporation, precipitation, ice formation, and ice melting all affect seawater's salinity. Seawater's salinity rises as a result of evaporation because salts remain in the water after it evaporates, increasing their concentration.
Is water's salinity a physical property?Physical oceanography relies heavily on seawater's temperature, salinity, pressure, density, and related quantities like potential density, heat capacity, sound speed, and others.
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Sand found in commercial sand and gravel deposits is typically composed of silicate minerals. a) True.b) False
a) True. Sand found in commercial sand and gravel deposits is typically composed of silicate minerals.
Sand found in commercial sand and gravel deposits is typically composed of silicate minerals, which are the most abundant minerals in the Earth's crust. Silicate minerals are composed of silicon and oxygen atoms, along with other elements such as aluminum, magnesium, iron, and calcium. Sand is often formed by the weathering and erosion of rocks containing silicate minerals, such as granite, basalt, and quartz, which are then transported by rivers or wind and deposited in sand and gravel deposits.
Sand is a naturally occurring granular material composed of rock fragments, mineral grains, and other small particles. The most common minerals found in sand are silicate minerals, which make up the majority of the Earth's crust. Silicate minerals are formed from a combination of silicon and oxygen atoms, and often include other elements such as aluminum, magnesium, iron, and calcium.
The most common type of silicate mineral found in sand is quartz, which is composed of silicon and oxygen atoms arranged in a crystal lattice structure. Other common silicate minerals found in sand include feldspar, mica, and hornblende.
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how do lithospheric mantle and asthenosphere differ from each other?
The lithosphere is the outermost mechanical layer, which is brittle and rigid. The asthenosphere is a solid upper mantle material that is so hot that it can flow and behaves plastically. The lithosphere is supported by the asthenosphere.
The lithosphere and asthenosphere have a symbiotic relationship in which the lithosphere floats on top of the asthenosphere. The movement of the asthenosphere can cause the lithosphere's rocky plates to move.
The lithosphere is Earth's solid outer layer. The lithosphere consists of the brittle upper portion of the mantle and the crust, the Earth's outermost layers. It is bounded above by the atmosphere and below by the asthenosphere (another part of the upper mantle).
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it has been suggested that the threat of global warming can be addressed by geoengineering strategies. which strategy has not been examined by researchers? question 3 options: adding iron to the oceans building lots of chemical plants to remove ocean acidity injecting sulfate particulates into the stratosphere covering the oceans with styrofoam chips placing giant mirrors in orbit above the earth to reflect sunlight
(a) adding iron to the oceans so that the threat of global warming can be addressed through geoengineering strategies.
Major radiative forcing geoengineering techniques discussed in the literature include stratospheric aerosol injection,sea sky brightening,cirrus thinning, space mirrors,surface-based brightening,and various radiation management techniques.Albedo enhancement. Increase the reflectivity of clouds or the Earth's surface so that more of the Sun's heat is reflected back into space.Space reflectors. By blocking a small proportion of sunlight before stratospheric aerosols reach Earth, some geoengineering schemes propose solar radiation management technologies that modify the Earth's albedo or reflect incoming short-wavelength sunlight.Human activity is driving this change, primarily through the emission of carbon dioxide (CO2) and other greenhouse gases, which are released.
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now we know that current velocity, or energy, and sediment size are correlated. high velocities only allow large grains to settle out, and only low velocities can allow for very fine grains to settle out and be deposited. so, how do graded beds form? they must represent a transition from a high to low energy current because they possess a transition from large to small grains. turbidity currents are water currents that are heavy because they possess a high sediment concentration. they commonly start as slope failures in shallow marine settings like a lake or ocean margin, then travel down the sloped margin, eventually depositing their loads at the bottom where it flattens out. sediment layers deposited by these currents are called turbidites. in this activity, choose from statements about turbidity currents and graded-bed formation as exemplified in the gigapan image. read the following statements and select which are true. specifically, focus on the relationships between grain size and velocities in turbidity currents.
D Turbidity currents have high concentrations of sediments, making them heavy enough to travel down slopes coherently, even in marine environments.
E. In the Gigapan image, the sedimentary layers can be described as turbidites that were formed by repeated deposition of sediments from turbidity currents in a marine setting.
This outcrop was formed when turbidity currents repeatedly deposited sediments as individual layers in a marine setting. These layers then lithified into sedimentary rock. The rocks were later slightly deformed and metamorphosed and then brought to the surface by erosion for us to investigate.
Investigating the patterns, textures, and sedimentary structures within sedimentary rocks is one of the best ways to reconstruct past environmental conditions from the rock record. Sedimentary rocks that have undergone little to no deformation, like here, provide some of the most critical pieces of information that allow geologists to reconstruct the history and evolution of Earth’s near-surface conditions.
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Full Question : Now we know that current velocity, or energy, and sediment size are correlated. High velocities only allow large grains to settle out, and only low velocities can allow for very fine grains to settle out and be deposited. So, how do graded beds form? They must represent a transition from a high to low energy current because they possess a transition from large to small grains.
Turbidity currents are water currents that are heavy because they possess a high sediment concentration. They commonly start as slope failures in shallow marine settings like a lake or ocean margin, then travel down the sloped margin, eventually depositing their loads at the bottom where it flattens out. Sediment layers deposited by these currents are called turbidites. In this activity, choose from statements about turbidity currents and graded-bed formation as exemplified in the Gigapan image. Read the following statements and select which are true. Specifically, focus on the relationships between grain size and velocities in turbidity currents.
Select the two that apply.
a. Sedimentary rocks like these are made from mud only.
b. The fractures in the rock affected the way in which the sedimentary layers were deposited.
c. The sediments exposed in this outcrop were likely deposited in a single, massive turbidity current.
d. Turbidity currents have high concentrations of sediments, making them heavy enough to travel down slopes coherently, even in marine environments.
e. In the Gigapan image, the sedimentary layers can be described as turbidites that were formed by repeated deposition of sediments from turbidity currents in a marine setting.
select all of the following that explain why the fossil record is incomplete. - erosion and movements of the earth's surface have destroyed many fossils that did form. - many organisms decomposed before they were buried in sediments - many fossils may never be discovered because they are buried deeply or submerged under water.
For a number of causes, the fossil record is incomplete. Many fossils that did form have been lost by erosion and shifting of the earth's surface, and many more may never be discovered because they are buried underground or submerged beneath water.
In addition, many species died before being buried in sediments, which prevented them from becoming fossils.
Furthermore, the fossil record only provides a snapshot of ancient life; it's possible that certain species existed before and after fossilisation episodes but were not preserved as a result.
Finally, living organisms are continually developing, and many species may have evolved and become extinct before they could be fossilised. The fossil record is imperfect for the reasons listed above, among others.
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