Who controls selective breeding? a
It occurs naturally.
b
Entire populationsIt is controlled by humans.

what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.

a unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.

if you look up in the top right corner you'll see your current profile picture, click than click "view profile" you'll be able to change it there.

. the sierra madre fault zone of southern california

. the san andreas fault california