What changes occur to your breathing and heart rate during exercise? why do you think these changes occur?

Your breathing increases, because your body is demanding more oxygen for delivering the right of amount of blood (flow) to the muscles, as well as the heart.

When your body exerts itself more than it's normal state, your muscles want more oxygen for the creation of ATP.

clumped distribution, because you'de have all of the population gathered in a relatively small are.

it's the most common because it provides protection and a mate for reproduction

example: humans, seeweed, cattles, etc.

i might be wrong but i think its a. let me know if i’m right and have a good rest of your day!