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slega [8]
3 years ago
6

Which era ended in the greatest mass extinction event in world history?

Biology
1 answer:
stich3 [128]3 years ago
6 0
The 2nd one hope this helps! :)
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A species of alligator remains unchanged for 100 million years, then suddenly an ice age forces them to adapt to colder temperat
Vinil7 [7]

Answer:

its c

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i searched it up online LOL, your welcome

5 0
2 years ago
a man has just learned that he has a blockage in one of his arteries. which of the statements is true regarding this blockage? p
Alik [6]

This blockage will likely increase the resistance to flow in his circulatory system, and as a result will decrease the rate of blood flow.

Blood vessels in the circulatory system transport blood away from and towards the heart. Arteries transport blood away from the heart, while veins transport blood back to the heart. The circulatory system transports oxygen, nutrients, and hormones to cells while also removing waste products such as carbon dioxide.

Vascular disease (vasculopathy) affects the blood vessels that transport oxygen and nutrients throughout your body and remove waste. Plaque (made of fat and cholesterol) slows or blocks blood flow inside your arteries or veins, causing common vascular problems. When there is too much cholesterol in the blood, the cholesterol and other substances can combine to form deposits (plaques) on the artery walls. Plaques can cause an artery to narrow or become blocked.

To learn more about circulatory system, here

brainly.com/question/3305440

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6 0
10 months ago
What problems would you expect to observe in an ecosystem without secondary consumers? Be sure to answer this question in paragr
nika2105 [10]

If there weren't  secondary consumers, then the primary consumers population would increase. Also,  plant life would be threatened, which would cause increased difficulty for primary consumers to survive after they overpopulate.So the population increases in producer (and probably producer diversity) and decreases in secondary, tertiary and higher order consumer populations.

question answered by

(jacemorris04)

6 0
3 years ago
Read 2 more answers
Explain two ways to study biotic and abiotic factors within an ecosystem.
Elden [556K]

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Ecologists study both biotic and abiotic factors and how they interact. Therefore, ecologists often use methods and data from other areas of science, such as geology, geography, climatology, chemistry, and physics.

Abiotic factors refer to non-living physical and chemical elements in the ecosystem. Abiotic resources are usually obtained from the lithosphere, atmosphere, and hydrosphere. Examples of abiotic factors are water, air, soil, sunlight, and minerals

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4 0
3 years ago
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Errors that are made during DNA replication may result in what?
Lena [83]
A mutation will form.
6 0
3 years ago
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