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GalinKa [24]
3 years ago
16

How has the EPA improved air quality over the last 30 years?

Biology
2 answers:
barxatty [35]3 years ago
8 0

Answer:

a

Explanation:

all of the other options make no sence at all

were talking about air not water

also dust storms really!?

and the last one is kind of true but the first one has more detail

Mrrafil [7]3 years ago
3 0

Answer:

a

Explanation:

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Answer:

Gradually, as generations of elephants continued to selectively use and develop their trunks.

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Jean-Baptiste Lamarck was  famous French Naturalist. He was a soldier, a biologist and an academic. He gave an early theory of evolution known as the theory of Lamarckism.

It was Lamarck who first believed that elephants earlier had small trunks. But eventual when there was scarcity of food and water, the elephants stretched out its trunk to reached out for food such as trees and also water. And as a result their offspring inherited long and powerful trunk.

In his theory of Lamarckism, he believed that the species passes on its traits to the offspring which they acquired through their use in their lifetime. In this case, the elephants might have used their trunks in such a way that they became long and strong over time and they passed tis trait to their babies.

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