Answer:
You would find one closer to the Carboniferous period.
Explanation:
You would find them closer to there because all life started out in the ocean and it took several eras for the land creatures to develop legs and the first era to have them is the Permian era and towards the end of the Carboniferous period. While the Silurina era was much earlier then both and still heavily influenced by crustaceons and other such sea creatures.
Since the first tetrapods appeared at the end of the Devonian period, it is expected to find tetrapods fossils closer to the Carboniferous than to the Silurian period.
--------------------
The paleozoic era goes from 570 to 250 ma ago.
The era is composed of the following periods
CAMBRIC (570-490 ma)ORDOVICIC (490-443 ma)SILURIAN (440-400 ma)DEVONIAN (400-360 ma)CARBONIFEROUS (360-290 ma)PERMIC (290-250 ma)SILURIC (440-400 ma)
Gondwana was already formed. Laurasia was in its formation process
This is a recovery stage after the big massive Ordovician extinction.
Trilobites diversification and occurs bivalves' radiation.
The first gnathostomes appear.
First records of terrestrial vascular plants ⇒ small and with no supporting structures, inhabiting the water margins.
DEVONIAN (400-360 ma)
There are new adaptative strategies that separate even more the marine environment from the terrestrial one. Age of FishesDefinitive colonization and diversification of species in the terrestrial environment.During this period, among other events, emerged the lineage that would later originate tetrapods, by the end of the period. The first Ichthyostega emerges, which could be the ancestor of amphibians.Expansion and diversification of plantsFirsts terrestrial arthropods emerged. Coevolution with plants started. A big massive extinction occurred at the end of the period that severely affected the marine environment. Occurs a gradual replacement of terrestrial plants.
CARBONIFER (360-290 ma)
Begins Pangea formationThere is an ecological rechange in the ocean after the extinctionAmphibians emerge on the ground.The first reptiles appear as anapsids, synapsids, diapsids.Complete independence from water. There was a diversification of horsetails and tree ferns, pro-gymnosperms, and gymnosperms.Insects proliferation.
According to this information, by the end of Devonian period the firsts tetrapods appeared.
During the Carbonifeous period, after the devonian massive extinction amphibians and reptiles appeared.
These sequences indicate that tetrapod fossils are closer to the Carboniferous period than the Silurian period.
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What is a good explanation for the '10%
rule'?
A. 90% of the energy goes to the next level of the energy
pyramid.
B. 10% of the energy goes to the next level of the energy
pyramid.
C. Producers make up 90% of an ecosystem.
Why is fundamental knowledge of biology necessary for everyone?
Answer: answer is in the explanation
Explanation:
1. Provide direct benefits to numerous industries
-Biology is a study of life that teaches us about others and the organic word around us. Therefore it is a broad science which can be used in a lot of industries like medicine, biochemistry and other industrial applications
2. Solvent various social and economic issues
-If you study biology in detail you would understand how it can quickly solve numerous social and economic problems
3. Provide an answer to fundamental questions on life
-This is another benefit of having fundamental knowledge in biology were this knowledge help us to understand basic things such us how the human body works
4. Get a better understanding of living beings and how they relate to the environment
If I was of help mark my answer as brainliest
which stores the most energy
Answer:
one gram of fat
Explanation:
Answer:
one gram of fat
Explanation:
A mature ovum travels through the __________ where it may possibly become fertilized.
Answer:
Fallopian tubes
Have a great day!
What is the role of the gametophyte in fernsg?
Answer:
The gametophyte produces the haploid gametes
Explanation:
Ferns are a group of lower plants that also undergo the ALTERNATION OF GENERATIONS in their reproductive life cycle. The plant consists of the SPOROPHYTE and GAMETOPHYTE. The sporophyte is a diploid plant body that produces the haploid spores via meiosis. These spores are released on the sporangium and grow into a haploid GAMETOPHYTE.
The gametophyte produces the haploid GAMETES i.e. male gametophyte (antheridium) produces sperm while female gametophyte (archegonium) produces eggs, which undergo fertilization to produce a diploid zygote that develops into the sporophyte. The cycle begins again.
Select the correct location on the image. Identify the power house of a cell.
Answer:
The powerhouse of the cell is MITOCHONDRIA because it releases energy by the oxidation of digested food.
Answer: The powerhouse of the cell is MITOCHONDRIA
Explanation:
5. Michael wanted to see what kitchen cleaner worked best for cleaning her counters. He used
Lysol, Clorox, Pinesol, and just water. For each cleaner, he put 5 milliliters of grape juice on
the counter, sprayed the cleaner, and wiped it with one paper towel.
a. Independent Variable (IV):
b. Dependent Variable (DV):
c. Control
d. Constants:
Answer:
IV- different kitchen cleaners
DV- which cleaner worked the best for cleaning her counter
C- the one with just water
cs-?
Explanation:
:)
Michael wanted to see what kitchen cleaner worked best for cleaning the counter. He use lysol, clorox, pinesol, and just water .
For each cleaner he put 5 milliliters of grape juice on the counter, sprayed the cleaner, and wiped with one paper towel.
What is independent variable?The independent variable in above statement is type of kitchen cleaner because you can use any type of cleaner in above cleaning process.
Dependent variable
The dependent variable in above question is how well grape juice stain was removed from the counters because it is depend how well you clean the strain.
Control group
The control group in above question is to counter top that received the lysol cleaner because you can control how much lysol use to clean strain.
Constant
Constant in above question is type of paper used for removing the strain because removal of strain doesn't totally depend on paper.
Therefore,Michael wanted to see what kitchen cleaner worked best for cleaning the counter. He use lysol, clorox, pinesol, and just water .
For each cleaner he put 5 milliliters of grape juice on the counter, sprayed the cleaner, and wiped with one paper towel.
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Phenotype determines genotype. If false, make it a correct statement.
A. True
B. False
Answer:
The correct answer is B. False
Explanation:
The genotype of an organism determines its phenotype. Phenotype is constituted by observable characteristics of an organism. These characteristics are codified by genes, and the combination of the differents variants of a gene which codify a phenotipic characteristic constitutes the genotype. For example: eyes color is a characteristic. Its is codified by variants of a gene. The combination of two variants of a gene gives a genotype, which codifies for the phenotype 'blue eyes'.
1. What percentage of American Farms are family operated?
Answer:
97% of american farms are family opertaed.
Explanation:
how many cm are in a 2500 mm rope?
Answer:
250
Explanation:
divide by length by 10
35. To study whether the average house cat prefers a chicken-based food or a vegetable-based food,
Arianna provided her cat with equal amounts of each kind of food at every meal time for a week. What
is the source of error in her experiment?
Answer:
She should involve one more than one cat in the experiment.
Explanation:
Errors are the mistakes happened in an experiment that causes results that are inaccurate in nature.
There is one error in the given experiment that Arianna should perform the experiment in more than one cat to find more accurate results. This is so because only one cat will not be able to give all the effects or side-effects of the food and the involvement of more cats will help to find more accurate observation.
Hence, the correct answer is "She should involve one more than one cat in the experiment."
Imagine a pool ball that bounces off of a bumper and
slowly comes to a halt. Explain what happened at each point in terms of applied
forces and energy transfer
Answer:
The kinetic energy is transferred from the ball to the bumper. The bumper gives the same energy back and the ball eventually stops due to friction of the ground.
Explanation:
Hope this helps y'all <3
When a ball bounces off of a bumper and slowly comes to a halt. The transfer of energy takes place from the ball to the bumper and the ball keeps on bouncing until all the energy is transferred.
What is Energy transfer?Energy transfer takes place when two objects comes in contact due to collision or bouncing. The energy from the moving body is transferred to the body in rest.
In the given situation, elastic potential energy is causing the ball to bounce, or rebound, because it is transformed into kinetic energy, which is then used to bring the ball back up.
When a ball is dropped, the gravity pulls ball towards the ground, which slows the ball down so with each bounce the height becomes shorter and shorter, until eventually the ball stops bouncing. On the other hand, the force of the ball hitting the ground puts an equal force back onto the ball which bounces the ball back up.
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Myrmecia pilosula was originally described as a single species, however, after closer examination, it was determined to consists of several distinct, closely related, physically similar species. Females have chromosome numbers of 2, 18, 20, 32, 48, 60, 62, and 64. Assume that a cross is made between a female of species (A) with 48 chromosomes and a male species (B) with 10 chromosomes (males are haploid and transmit all their chromosomes to each sperm cell). How many chromosomes would be expected in the somatic cells of the hybrid female offspring?
Answer:
The correct answer is "34".
Explanation:
The ant Myrmecia pilosula is a special case of sexual reproduction, where the females produce gamete cells with half the chromosomes of the somatic cells and the males are haploids that transmit the whole number of chromosomes in their gametes. Therefore, the somatic cells of the hybrid female offspring that results from the cross of a female ant with 48 chromosomes and a male with 10 chromosomes would have 34 chromosomes. This result from half the number of chromosomes of the female (24) plus the total number of chromosomes of the male (10).
Each question is 20 points so please answer
2) How does pH affect enzyme-controlled reactions?
Explanation:
Each enzyme has an optimum pH range. Changing the pH outside of this range will slow enzyme activity. Extreme pH values can cause enzymes to denature. Enzyme concentration: Increasing enzyme concentration will speed up the reaction, as long as there is substrate available to bind to.
All living things are composed of cells true or false
Answer:
True
Explanation:
everything is composed of cells Dead or Alive
Which of the following are adaptations of plants for photosynthesis?
A. thylakoid membranes stacked into grana
B. broad, flat leaves
C. stomata for gas exchange
D. xylem vessels for water transport to the leaves. E. All of these are adaptations for photosynthesis.
Answer:
I think it's (E) but I'm not sure
Baleen whales use _____ to prey on herring fish.
1.) an oily glandular secretion
2.) low pitched sounds
3.) bubbles
4.) phytoplankton swarms
5.) temporary increases in water temp
Answer:
They use bubbles.
The most well-known method for Baleen whales to catch herring fish is the bubble net feeding method. Therefore, option (3) is correct answer.
What is the bubble net feeding method?Baleen whales, sometimes known as whalebone whales, are a suborder of carnivorous marine mammals that belong to the infraorder Cetacea. To filter planktonic organisms from the water, baleen whales use keratinaceous baleen plates in their mouths, which are similar to whalebones.
When feeding by bubble-net, whales descend to great depths below schools of fish and then use the bubbles released from their blowholes to daze and catch fish that are swimming closer to the surface. In most cases, one whale will take the initiative, followed by the other members of the group.
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help please AFSP HELP
Answer:
I think the answer is B.
HOPE THIS IS RIGHT......
Answer:
A: Bubbles formed
Explanation:
Signs of a chemical change are the formation of bubbles, color change, formation of a precipitate, formation of a gas, odor change, change in temperature
The statement “the flower grew 8 cm on Tues" is a(n):
a. Observation
b. Inference
c. Skepticism
d. Bias
Other:
Answer:
a
Explanation:
You watching the flower and noticing it grew 8cm is an observation
What is the independent variable?
O The response to the change. It is measured.
O What the change is being compared to (baseline)
O The one change being tested.
O Conditions that are kept the same.
Answer:
last 1
Explanation:
the whole point of an independent variable is it never changes no matter what
A student wants to observe the movements of a microscopic aquatic creature. Which of the following pieces of laboratory equipment would most likely NOT be used?
O Coverslip
O Microscope
O Scalpel
O Eye dropper
25. How does a forest fire impact all of the other spheres?
Answer:
From my point of view ... firstly, forests are home to many animals, and this will lead to displacement of animals ... Secondly, forest fires lead to the loss of trees, which are the source of oxygen gas, and an increase in the proportion of carbon dioxide
3. Plants which were grown in the past and have been bred to adapt to a specific
environment defines which of the following?
A. Heirloom crops
B. Year-to-year crops
C. Organic crops
D. Rotation crops
Answer: A. Heirloom crops
Which of the following are NOT molecules that can move through the cell
membrane via passive transport.
Select one or more:
a. sugar (glucose)
b. calcium ions
C. water
O d. carbon dioxide
e. oxygen
Which of the following is true about the taiga biome? a. The taiga biome is the largest biome in the world. b. It is found on five of seven continents. c. The taiga biome has three distinct seasons. d. The temperature in the taiga is rarely ever below freezing.
Answer:
The Answer is A
Explanation:
B would be incorrect, since it is only found on 3 biomes. C is also incorrect, as there is only 2 distinct seasons. D is false because taiga biomes are very cold, and theres always snowfall there. Leaving the last answer as A.
Taiga biome is a boreal forest with coniferous trees that has major life zones and thick forest zones. It is the largest biome on the globe. Thus, option a is correct.
What is the Taiga biome?Taiga biome is the snow or the boreal forest that has a cone, pine-bearing trees, and evergreen trees in its region. They are characterized by the long winters and high to moderate precipitation rates.
It covers 11% of the land and hence is the largest biome on the land, located in the northern hemisphere, covering North America, Alaska, and Canada. They are characterized by the presence of coniferous trees with freezing winters, and hot summers along with humid rainy seasons.
Therefore, the taiga biome is the largest biome in the world.
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Organizing the Elements
• Understanding Main Ideas
1. atomic
The diagram at
the right is a square from the periodic
-2. chemio
table. Label the four facts shown about each element.
3. element
Answer the following on a separate sheet of paper,
-4. a tomar
5. What does each of the facts shown above tell you about the element?
6. In what order did Mendeleev arrange the elements in the periodic table?
7. What do elements in the same column in the periodic table have in common?
8. What happens to the number of valence electrons as you move from left to
right in the periodic table?
9. What can you predict about an element from its position in the periodic
table?
Building Vocabulary
Answer:
can someone help me on my question
Explanation:
(20points)
The data table below shows the presence or absence of DNA in four different cell organelles.
Information in the table suggests that DNA functions
A) within the cell vacuoles
B) only within energy-releasing structures
C) both inside and outside of the nucleus
D) within cytoplasm and outside of the cell membrane
Answer:
B.) Only within energy-releasing structures
Explanation:
Both the Mitochondra (POWERHOUSE of the cell hahaa—) and the Nucleus produce energy for the cell. These are also the only parts I remember learning have DNA? :>
Identify TWO environmental problems, other than the loss of biodiversity, that are occurring as a result of global climate change.
Answer:
Ice caps melting, increased heat causing droughts and wildfires
Two environmental problems other than the loss of biodiversity, that are occurring as a result of global climate change. that are occuring as a result of global climate change are as follows:
DesertificationDeforestationMost enviromental problems are majorly caused by climatic change though.
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Write down the terms which contains the word root which means nerve root.
Answer:
Birth root, square root, beetroots, blood roots and taproot.
Explanation:
Birth root, square root, beetroots, blood roots and taproot are the terms which contains 'root' word. Birth root refers to a perennial plant whose flowers are red in color. Square root is a method used in mathematics for solving various problems. Beetroots refers to the vegetable which grow underground in the roots. Blood root is a plant which belongs to a poppy family. Taproot is a type of root system which is present in dicot plants.
