The answer is adrenal gland
The best answer would be "research reasons why species change over long periods of time"
if not i apologize but this is my best guess<span />
When in a certain situation, organisms with traits more suited to survive in that situation often survive more often and are able to reproduce more, which means that their genes eventually dominate the gene pool.
For example: take a light moth population and a dark moth population. They live in a forest with dark trees, so the dark moths blend in more and are harder to find and hunt. As a result, more of them survive than the light moths, so more of them are reproducing and passing their genes along.
Over time, those genes may become the only traits of that variety that the organism can have, so they grow to evolve and adapt to their surroundings.
I think the answer is c, because in a city, there is very little natural shade like trees. also, asphalt creates more heat when the sun is directly on it.
Our thoughts and nerves are connected. When we think of movement, nerves jolt into action and lead to the movement of our arms and feet. That, if anything, is biology helping inform every day decision.