If biogenic sediments were discovered to come from meteorites, what could we conclude?

a. these meteorites are larger than earth rocks.
b. there is life in outer space.
c. these meteor rights collided with our moon before landing in our oceans.
d. none of the above

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.

the growth of the plants is affected by the heat of the light. what is the student doing?