What is the primary function of the biceps? a. To pull the arm down and back

b. To raise the shoulder.

c. To contract the forearm

d. To extend the forearm

What effect do stimulants, such as cocaine, have on the nervous system? o a. stimulants change the activity of neurotransmitters. o b. stimulants mimic hormones and influence moods. o o c. stimulant|mchange how sensory information is processed. d. stimulants decrease brain activity.

Which u.s. state is home to the fewest species of mosquitoes?

Which of the following is true of vegans?