About 530 million years ago, an evolutionary period known as the "Cambrian explosion" took place. Large numbers of new animal species appear in the fossil record that corresponds with this time.
Based on patterns of extinctions documented in the fossil record, about how many of these Cambrian species are probably still surviving today?
A- none of them
B- All of them
C-most of them
D-A very small number of them
Answers
Answer:
not answering give me them points
Explanation:
Answer: A vary small number of them
Related Questions
Plants produce oxygen which animals use. Animals produce carbon dioxide which plants use. Predict the most likely outcome if airborne pollution blocked the sun’s rays so significantly that the percentage of living plants was decreased by 95%.
A. Plants would quickly evolve to consume a mixture of oxygen and carbon dioxide
B. Animals would quickly evolve to begin using carbon dioxide
C. The atmosphere would fill with carbon dioxide, and animals would begin to die.
D. The atmosphere would fill with oxygen, and animals would begin to die.
Answers
Answer:
C
Explanation:
A can’t happen because there are barely any plants
B can’t happen because Animals need Oxygen to breathe
D won’t happen due to lack of plants
As a result of the experiment scientists did with Mexican tetras, it seems likely that their first hypothesis about blindness in the tetras is right. Explain how the result of the experiment supports their first hypothesis.
The scientists' first hypothesis is that blindness gives the fish some sort of evolutionary advantage, but not directly.
The experiment was: The scientists transplanted a lens from the eye of a surface tetra embryo into the eye of a cave tetra embryo. The result was striking—the surface tetra lens into the cave tetra caused all of the surrounding tissues to develop into a healthy eye.
Answers
A result that supports the hypothesis 'blindness gives the fish some evolutionary advantage, but not directly' may be a higher fitness in close relatives of fish.
What is a hypothesis?An scientific hypothesis is a given explanation to a scientific observation from the real world.
A hypothesis must be verifiable, which means that it can be confirmed or rejected by using the scientific method.
In conclusion, a result that supports the hypothesis 'blindness gives the fish some evolutionary advantage, but not directly' may be a higher fitness in close relatives of fish.
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A student claims that the only difference between prokaryotic cells and eukaryotic cells is that
eukaryotic cells have a nucleus, but prokaryotic cells do not. What is wrong with this claim?
The description of the cell types is incorrect.
Prokaryotic cells have a nucleus, and eukaryotic cells do not.
The description of the cell types is incorrect. Both prokaryotic and eukaryotic cells have a nucleus.
There is another difference between the cell types. Eukaryotic cells have membrane-bound organelles, but
prokaryotic cells do not.
There is another difference between the cell types. Eukaryotic cells have a cell membrane, but prokaryotic
cells have a cell wall instead.
Answers
Explanation:
Eukaryotic cells:
• There is a well defined nucleus
• They are membrane bounded cell organelles like chloroplast, golgi bodies, mitochondria.
Prokaryotic cells:
• The nucleus are not well defined
• Cell organelles are not bounded by membrane
HELPPPPP ME PLS lol lol lol lol
Answers
Answer: 1. chemical weathering
2. mechanial weathering
3. Chemical weathering
4. I believe mechanical??
If theses are not right, I'm sorry for the wrong answers
Explanation:
Answer:
I dont even know-
Explanation:
Carbon dioxide enters a plant through pores (openings) called the
A. stomata.
B. cuticle.
C. veins.
Answers
I hope this helps good luck!! :)
Put the following in order describing the process of using geothermal energy to create energy.
= Heat is collected from the Earth
= Steam turns a turbine.
= Generators produce electricity.
= Heat is used to change water into steam.
Answers
Answer:
1. heat is collected from the earth
2. heat is used to change water into steam
3. steams turns a turbine
4. generators produce electricity
Explanation:
which involves producers, consumers, and decomposers?
the water cycle
nitrogen fixation
evaporation
the carbon and oxygen cycles
Answers
Why do you think they split the reptiles into four different groups?
Answers
tRNA uses (anticodons/codons) to match to the mRNA.
Answers
Answer:
anticodons
Explanation:
codons are for mRNA
tRNA uses anticodons to match to the mRNA.
Which one does tRNA uses?tRNA (transfer RNA) molecules are responsible for carrying specific amino acids to the ribosomes during protein synthesis.
They have an anticodon region that consists of three nucleotides that are complementary to the codons on the mRNA (messenger RNA). The codons on the mRNA determine the sequence of amino acids in the growing polypeptide chain.
The anticodon on the tRNA base pairs with the complementary codon on the mRNA, ensuring that the correct amino acid is incorporated into the growing protein chain. The matching between the anticodon and codon is essential for the accurate translation of genetic information into protein synthesis.
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Use the images below to answer the question. 2. What makes all of the samples different from each other?
Answers
Answer:
Shape and structure.
Explanation:
The difference in shape and structure of these pictures is responsible for the difference from each other. The organisms present in these pictures are different in their size, shape and composition of their body. Some are small and some are large, some are living while the others are non-living, some are very hard whereas the others are soft and fleshy. So the organisms present in these samples are different from each other in a variety of ways i.e. size, shape and body structure.
Outline the process of the Carbon Cycle.
Answers
Answer:
Carbon Cycle Definition
Carbon cycle is the process where carbon compounds are interchanged among the biosphere, geosphere, pedosphere, hydrosphere, and atmosphere of the earth.
Carbon Cycle Steps
Following are the major steps involved in the process of the carbon cycle:
Carbon present in the atmosphere is absorbed by plants for photosynthesis.
These plants are then consumed by animals and carbon gets bioaccumulated into their bodies.
These animals and plants eventually die, and upon decomposing, carbon is released back into the atmosphere.
Some of the carbon that is not released back into the atmosphere eventually become fossil fuels.
These fossil fuels are then used for man-made activities, which pumps more carbon back into the atmosphere.
Hope it helps!!!
Pleas e Brainlyiest if you answer
Answers
Answer:
B
Explanation:
Answer:
The second option (i think)
Explanation:
Chromosomes are the things that make organisms what they are. They carry all of the information used to help a cell grow, thrive, and reproduce. Chromosomes are made up of DNA. Segments of DNA in specific patterns are called genes.
Which statement best describes the movement of ocean waves? Water moves across the ocean's surface water remains in the same place as wave (energy) travels through it water moves because there is a difference in density of the water creating a wave none of these
Answers
Answer:
water remains in the same place as wave (energy) travels through it
Explanation:
Winds influence the ocean and its movements. Air current running on the ocean surface transfers energy to water. A wave is nothing else than energy. When the winds provide energy to the water surface and produce waves, it occurs a particular water molecules´ motion. They move in circles from up to down, up to a certain depth, and go back to the surface. And they do so while energy from the wave is passing through. Waves are the ones that move through the ocean until they reach the shore, where the energy is transferred to land. Water molecules remain in the same general area, while energy travels from molecule to molecule as a wave.
ASAP!!
Write any 3 ways to protect the crop from disease and insects!!
No links!!!
No spams!!
Answers
stinkbugs feed on weeds; if they surround your plants, they're likely to attack them as well.
Biological pest control approaches such as cover crops, trap crops and beetle banks.
Fertilize and water your plants regularly. Insects are less likely to infest healthy and well-nourished plants.
Can someone tell me if it’s correct
Answers
Answer:
yes ur right
Explanation:
(a) Part A Which claim is best supported by the data?
A)As annual precipitation increases, the populations of Species A and B increase.
B)As annual precipitation increases, the populations of Species A and B decrease.
C)As annual precipitation increases, the population of Species A increases while Species B decreases.
D)As annual precipitation increases, the population of Species A decreases while Species B increases.
Part B If the precipitation levels observed in year '09 remain the same and other resources remain constant, identify and describe what can be predicted to occur with the population of Species B over the next 6 years? Enter the answer in the box.
Answers
Answer:
D
Explanation:
It increases
The claim is best supported by the data is as annual precipitation increases, the populations of Species A and B decrease. Thus, option B is correct.
When annual precipitation increases according to the data?
As annual precipitation increases, the populations of Species A and B decrease. As annual precipitation increases, the population of Species A increases while Species B decreases. As annual precipitation increases, the population of Species A decreases while Species B increases.
As annual precipitation increases, the populations of Species A and B increase. As annual precipitation increases, the population of Species A decreases while Species B increases.
If the precipitation levels observed in year '09 remain the same and other resources remain constant, identify and describe what can be predicted to occur with the population of Species B over the next 6 years.
Therefore, The claim is best supported by the data is as annual precipitation increases, the populations of Species A and B decrease. Thus, option B is correct.
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The Rio Grande River separates Mexico from Texas.
What most likely created the riverbed?
A.glaciers
B.plate collisions
C.volcanoes
D.water erosion
Answers
Answer:
d I think or b?
Explanation:
water could cause it to form a river and spread over time
Much of the precipitation in the taiga falls as snow. How have evergreen trees adapted to these taiga
conditions?
They can keep water and nutrients flowing in their trunks and branches all year
The evergreens develop deep roots in the fertile taiga soil.
They lose their leaves in the winter to prevent the loss of nutrients and water.
O Evergreens stop photosynthesis and become dormant in the winter.
Hi
Answers
Answer:
you stole points from me.
Please help!!
Explain why it would be financially beneficial for a farmer to treat a fruit crop with gibberellins.
Answers
Answer:
Gibberellins can promote flowering, which can result in more financially profitable flowers to sell due to the increased speed of flower growth. More attractive flowers and larger specimens are also produced. Flowering also has an impact on the rate of fruit growth.
Explanation:
PLSS HELP ME!! NO LINKS!!
*fill in the blanks*
______ formation is caused by
dripping water shaping upside down
cones from cave roofs. This is an example
of________
(weathering, erosion,
or deposition)
________ formation is caused by a small amount of minerals dripping in the dissolved water during stalactite formation. This is an example of______ (weathering, erosion, or deposition)
Plss help me:(( i will give you BRAINLYEST!!
Answers
Answer:
1 stalactite
2 deposition
3 stalagmite
4 deposition
Explanation:
Plz HELP!! where does respiration, the process of releasing energy from combination of oxygen and glucose, occur? A. Cells B. Bronchi. C. Pharynx. D. Nose
Answers
Answer:
A
Explanation:
What two types of consumers are missing from this pyramid?
Please help I need to turn it in today !!!!
Answers
Answer:
decomposers and omnivores
Explanation:
PLSSS HELP WITH THIS IMMEDIATELY!!!!! only answer if u know, i’ll be giving brainiest to the right answert
Answers
Answer:
I cant see the question just use the snipping tool to tack a screenshot
Explanation:
Which of the following represents the correct order of the phases of the
Moon?
A. new moon, full moon, last quarter, first quarter, and then new moon again
B. full moon, new moon, last quarter, first quarter, and then full moon again
C. full moon, last quarter, new moon, first quarter, and then full moon again
D. last quarter, full moon, new moon, first quarter, and then last quarter again
Answers
Answer:
c
Explanation:
full and new moons aren't back to baxk
using the graph, the temperature seasonal force from the other Forest biomes. choose all the apply
A) the temperature seasonal Forest averages 100 to 200 cm rainfall/year
B) the temperature seasonal Forest is cooler and wetter than the tropical rainforest
C) the temperature seasonal Forest has warmer average temperatures than the Boreal forest
D) the temperature seasonal rainforest has similar temperatures but less rain than the temperate rainfores
E) the temperature seasonal rainforest has similar rainfall to the Boreal and tropical seasonal rainforest, but is much warmer than either one
Answers
Answer:
The correct answer is - A and C,
Explanation:
According to the graph, the following conditions are matched correctly with the temperature seasonal forest with other biomes:
The temperature seasonal forest has the precipitation range from 50 cm to 250 cm rainfall per year approximately. The average rainfall from this would be 150 cm/year or between 100 to 200 cm per year.
B. the temperature seasonal forest has a temperature between 15 degrees Celsius to 20 degrees celsius which is warmer than the boreal forest that has a temperature between 0 to 15 degrees Celsius approximately.
Answer:
A, C, D
Explanation:
What is the main difference between active transport and passive transport?
(A) During active transport the water inside the cell is used to transport substances throughout the cell. Passive transport uses the cell's cytoplasm to move substances around the cell.
(B) Passive transport moves substances throughout the cell without using the cell's energy and active transport moves substances using the cell's energy.
(C) Active transport moves substances from higher concentrations to lower concentrations and passive transport moves substances from lower concentrations to higher concentrations.
(D) Passive transport moves substances that are too large to get through the cell membrane by forming a vesicle inside the cell and active transport forms the vesicle on the outside of the cell.
Answers
Answer:
B
Explanation:
passive transport uses diffusion to transport while active transport uses some energy most commonly atp
Hello! could someone please do a 4 sentence quark poem
Answers
Answer:
Quark is a character in the television series Star Trek: Deep Space Nine.
Quark developed a few strong friendships during his stay on Deep Space Nine.
The Ferengi have business deals throughout the galaxy; Quark is no different.
For vegetarians, soft cheeses like cream cheese and quark do not contain any rennet at all.
Explanation:
Which is a primary way that enzymes affect these reactions? *
Answers
Answer: chemical reactions
Explanation: The function of an enzyme is to speed up chemical reactions. They do this by lowering the activation energy, which is the minimum energy that must be available for a chemical reaction to occur. If the energy required is lowered, the reaction can go faster.
Black fur (B) is dominant and white fur (b) is recessive in mice. What are the possible offspring of two black mice (Father = Bb and Mother = Bb) bred together? Think of Mendel's F2 generation.
Answers
Answer:
BB, Bb, Bb, bb
Explanation:
by performing a punnet square you will see that these are the possible outcomes. if you need me to go into more detail I will try my best to list the genetic makeup below:
BB: 25%
Bb: 50%
bb: 25%
White: 25%
Black: 75%
What is the answer to this?
Answers
Answer:
1.84 × [tex]10^{8}[/tex]
Explanation:
(2.0 × [tex]10^{8}[/tex])-(1.6 × [tex]10^{7}[/tex])
we need to make the powers the same in order to minus
(2.0 × [tex]10^{8}[/tex])-(0.16 × [tex]10^{8}[/tex]) →1.84 × [tex]10^{8}[/tex]
