Why does each person have the same genetic makeup as the zygote they developed from

Plzz hurry im being timed during times of vigorous physical activity, muscles require a constant supply of oxygen. how does the body respond to these needs? a. breathing rate and heart rate both decrease. b. breathing rate and heart rate both increase. c. heart rate decreases, but breathing rate remains stable. d. breathing rate increases, but heart rate remains stable.

In what way are cities microclimates?

An easy way to calculate the amount of energy available at each level is to what?