Question

How do environmental changes affect animals?

Answer 1

Any environmental change puts pressure on animals to adapt.

Explanation:

The climate change at the end Mezoic Era caused the extinction of many cold blooded species that were unable to adapt to the greater variations in the climate. However the climate change was to the benefit of mammals that were warm blooded.

Polar Bears that have adapted to living in a colder climate, a white environment and hunting on ice flows. The Polar Bear would have have to readapt to living more on land in an environment where white fur is not such an advantage.

Brown bears on the other hand would able to extend their range and would thrive.