Answer:
Scientists usually use the potassium-argon method to date rocks that are older than about 1 million years. Uranium-238 is also used for radiometric dating. It has a half-life of 4.5 billion years. It decays to produce lead-206.
Potassium-40 is one radioactive isotope the geologist can use to learn the exact age of the rock, by the use of radiometric dating methods.
What is radiometric dating?This is the process through which geologists can easily use to learn the exact age of the rock, it depends upon the natural radioactive decay of some elements such as potassium and carbon.
Geologists generally use the potassium-argon method to date rocks that are aged more than about 1 million years. Uranium-238 is also used for radiometric dating and has a half-life of 4.5 billion years. It decays to produce lead-206.
Radiometric dating is to find the date of the material such as carbon or rocks by labeling the radioactive impurities in a trace amount that is incorporated in it.
Therefore, Potassium-40 is used to know the exact age of the rock.
Learn more about radiometric dating, here:
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How do the Aleutian volcanoes differ from the Cascades volcanoes?
Answer:
Type of Convergence - Ocean to continent for Cascade/ Ocean to Ocean for Aleutian
Explanation:
If the two plates that meet at a convergent plate boundary both are of oceanic crust, the older, denser plate will subduct beneath the less dense plate.
The features of an ocean-ocean subduction zone are the same as those of an ocean-continent subduction zone, except that the volcanic arc will be a set of islands known as an island arc.
The older plate subducts into a trench, resulting in earthquakes. Melting of mantle material creates volcanoes at the subduction zone.
The Cascade Volcanoes are a group of volcanoes in western North America that stretch over 700 miles from southwestern British Columbia through Washington.
Where are Cascade volcanoes?The Pacific Northwest's skyline is dominated by active volcanoes. Volcanoes of the Cascade Range (Public domain.) The Cascade Range's familiar snow-capped peaks are part of a 1,300 km (800 mi) chain of volcanoes that stretches from northern California to southern British Columbia.The Cascade Volcanoes are a group of volcanoes in western North America that stretch over 700 miles from southwestern British Columbia through Washington and Oregon to Northern California. Subduction along the Cascadia subduction zone formed the arc.The Aleutian Arc is a large volcanic arc in Alaska, United States. It is made up of a number of active and dormant volcanoes formed by subduction along the Aleutian Trench.To learn more about : Volcanoes
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The diagram shows the heart of a bird.
What is the function of the structure labeled Y? to keep oxygen-rich blood and oxygen-poor blood flowing to filter waste materials from oxygen-poor blood to filter waste materials from oxygen-rich blood to keep oxygen-rich blood and oxygen-poor blood separate
Answer:
to keep oxygen-rich blood and oxygen-poor blood separate
Explanation:
Why are electron microscopes capable of revealing details much smaller than those seen through light microscopes?
The structure of a human skin cell differs from that of a human muscle cell. The two cells most likely have different __________. Choose the correct answer.
Answer:
The correct answer would be - functions.
Explanation:
The structure of the skin cells and muscle cells are different and have a different number of cell organelles on their role in the body. Skin cells are a special type of cells that keep on shedding and replaced by new ones therefore they need less energy and have many mitochondria.
In contrast, muscle cells have different structures as they need a high amount of energy to make movements and therefore have lots of mitochondria in the cell.
Which domain and kingdom includes humans?
Which is a common practice for farmers to yield higher crop production?
A) Overplowing mixes the nutrients in the soil
B) consistently plant the same crop every year
C) allow later-successional growth to replace nutrients
D) keep the area planted with early-successional species
NOT C
Answer: D) keep the area planted with early-successional species.
Explanation: Early successional species grow fast and spread their seeds rapidly and widely. This could help to bring in a potentially high crop yield.
It likely is not A because overplowing leaves the soil susceptible to erosion and damages the physical infrastructure.
B should not be the answer because consistently planting the same crop year-round can deplete the nutrient resource said crop relies on. It’s why crop-rotating is a thing now.
I hope this helps :(((
10 POITNS BRAINLESS MULTIPLE CHOICE
Answer:
Eukaryotic and Animal.
Answer:
It's a eukaryotic cell.
hope this helped
Somatic cells in humans contain ____ chromosomes and an example is ______.
People on the low ground around Lake Nyos survived, while those living in the higher surrounding
areas died.
What causes clouds of dust and gas to form a protostar?
Answer:
Mainly the gravitational instability in the clouds of dust (molecular clouds)
Explanation: Stars are born within molecular clouds, which are mostly made of hydrogen and lesser amounts of helium and other heavier elements. The formation of a protostar begins when gravitational instability is present in the molecular cloud, caused by regions of higher density. Eventually, the clouds of dust start to collapse to due gravity, the protostar forms. The protostar, is still an underdeveloped star, meaning it does not perform nuclear fusion in its core, but it still produces its own heat from the extreme pressure.
Question
If a rose plant has a genotype of Ffgg, what are the possible genetic combinations of offsprings that could be
present from this plant?
Answer:
Suppose you have a parent plant with purple flowers and a parent plant with white flowers. Because the b allele is recessive, you know that the white-flowered parent must have the genotype bb. The purple-flowered parent, on the other hand, could have either the BB or the Bb genotype. The Punnett square in Figure below shows this cross.
Explanation:
Hurry please!!
Energy transfer is inefficient between trophic levels because
A. Organisms within a trophic level are fully consumed.
B. Dead organisms and waste are recycled throughout the trophic levels.
C. Molecules are fully digested from each trophic level.
D. All organisms within a trophic level die.
Answer:
C. Molecules are fully disguise from each trophic level
What are two examples of organic molecules
that scientists think first formed?
Answer:
Amino acids and nucleotides
Explanation:
Amino Acids -
Amino acids are organic compounds that mix to create proteins.
Nucleotides -
A nucleotide is an organic molecule that's the building block of DNA and RNA.
A Brain consists of ________,__________ and ___________.
If You Give Correct Answer I will Make you Brainliest
The distribution of materials such as gases, nutrient, hormones, and wastes is called
6. All of the following are true about the differences
between proteins and lipids EXCEPT:
a. Foods that are good sources of lipids include
fruits and grains, while foods that are good
sources of proteins include nuts and meat.
b. Lipid hormones will be made of glycerol and
fatty acids, where protein hormones are made
of amino acids
c. Lipid hormones will be composed of carbon
(C), hydrogen (H), and oxygen (O), where
protein hormones will be composed of carbon
(C), hydrogen (H), oxygen (O), and nitrogen
(N), phosphorus (P), and sulfur (S)
d. Besides their function as hormones, lipids are
also used for energy storage and proteins are
used for structure and repair
Answer:
Functions of Fat in the Body
Ralph and Cory are friends on their way to a big party. Cory is familiar with the party's hosts and seems to always know what to say to be the life of the party. Ralph, who has never engaged with this group, is unsure of how to act or participate. What can be said of Ralph and Cory?
Answer:
Ralph is more stressed by the situation because Cory has a better set of social skills than Ralph.
Explanation:
Social skills are attributes that make interactions with others easy and comfortable for people. The scenario shows that Cory is more lively and sociable, thus, his social skills are better than Ralph's. Ralph on the other hand is apprehensive because he is not very sociable and finds it difficult to manage his interactions with people.
Ralph's situation is worsened by the fact that he is unfamiliar with the people in the party.
A sand dune, found in deserts and beaches, is formed by what type of erosion? *
-Wind
-Gravity
-Water
-Ice
Answer:
wind
Explanation:
Sand dunes form when the wind deposits sand.
can someone do at least a few of these please?
What determines which substrate an enzyme will act on?
Answer:
Enzyme Active Site and Substrate Specificity
Enzymes bind with chemical reactants called substrates. There may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. In some reactions, a single-reactant substrate is broken down into multiple products.
Explanation:
The sense of touch is produced by within the skin.
1. Nerve cells
2. Cardiac cells
3. Epithelial cells
Answer:
Explanation:
Nerve cell as they send electrical impulses.
It cant be cardiac cell as that is in the heart.
And the epitherial cell covers the inside and outside off the stomach
Heredity is the passing on of traits from parent to offspring. Heritable information is important for life to continue. What is the role of meiosis in heredity?
Write your answer in the space below.
Answer:
Meiosis helps create more diversity and individuality in the genes of organisms.
Explanation:
Hope this is helpful, this is what I learned last year.
Answer:Sexual reproduction allows for the passing of traits from parent to offspring. In sexual reproduction, meiosis produces gametes that have chromosomes from the parents. The chromosomes carry genetic information. When the gametes fuse during fertilization, an individual with a unique combination of chromosomes or a unique genetic make up is formed.
Explanation:this is the sample response on edge
How do the three types of RNA work together to create proteins
using the genetic information contained within DNA?
Answer:
The three roles of RNA in protein synthesis. Messenger RNA (mRNA) is translated into protein by the joint action of transfer RNA (tRNA) and the ribosome, which is composed of numerous proteins and two major ribosomal RNA (rRNA) molecules. ... Ribosomal RNA (rRNA) associates with a set of proteins to form ribosomes.2. Each molecule of DNA is a double helix formed from two complementary strands of nucleotides held together by hydrogen bonds between G-C and A-T base pairs.
Explanation:
The first one is for How do the three types of RNA work together to create proteins
And the second is for using the genetic information contained within DNA?
is teeth and curly hair a recessive trait or dominate trait plz explain
Answer:
Since curly hair is a dominant gene, there is a good likelihood that one or two curly-haired parents will produce a curly-haired cutie. But genetics are tricky, and there's a chance that two parents with curls could carry the straight hair recessive gene, and pass that onto their offspring.
Hope this helped you
could really use some help on this !!
Answer:
some of the cats did not eat the food so they got hungry
A student was interested in comparing sunblock lotions, which contain
chemicals that protect the skin from sunburn. The student purchased three
different brands of lotion at three different prices and performed an
experiment to see which one best protected the skin. The lotions cost $3,
$5, and $7 for an 8-ounce bottle. The sun protection factor (SPF) was 30 for
all three lotions. The student applied equal amounts of each lotion next to
each other on one of her arms. The three areas covered by the lotions were
the same size. The student observed the three areas for color change after
two hours of Sun exposure. Identify one condition that were held constant
in this experiment. *
What are the errors and explain why
Answer:
1. Oxygen
2. Glucose
3.Light energy
Explanation:
1. Oxygen is not needed by the plant for photosynthesis.
It is a by-product of photosynthesis. Instead Carbondioxide is needed.
2. The glucose produced does not stay solely in the plant, part of it is used up by the plant while others stores in edible parts of the plant that men use as food.
3. The light energy converts H2O to 4H+ and 4OH- needed in the synthesis of carbohydrate and release of Oxygen.
What is the carbon cycle
Answer:
The carbon cycle is the process in which carbon travels from the atmosphere into organisms and the Earth and then back into the atmosphere. Plants take carbon dioxide from the air and use it to make food. Animals then eat the food and carbon is stored in their bodies or released as CO2 through respiration.
Explanation:
Hope this helps
Will mark Brainliest if correct!
Identify at least one example each of absorption, transmission, reflection, and refraction of
waves in this photograph.
Answer:
Due to the obvious refraction, the diver's head appears to be separated from his body. Absorption takes place when some of the colors are absorbed, causing the snorkel to appear yellow or greenish. The sun, sky, sound, and light are all reflected. The light entering the water is referred to as transmission.
Explanation:
help help will give brainliest if correct
Answer: RNA
Explanation: I have recently learned this.
Answer:
rna
Explanation:
"To extract the information and get it to the location of cellular machinery that can carry out its instructions"
