What is the main function of the cardiovascular system? a
move blood through the body
b
exchange of oxygen in the environment
c
filtering out toxins in the kidney
d
creates movement of the body

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.

Hand washing is an important behavior that can cut down your chances of becoming sick with a communicable disease. select the best answer from the choices provided. t f

Which of the following statements is true? a. poll data show that a majority of americans accept gay and b. open discussions of sexuality are welcomed by all families, c. homophobic stereotypes rarely occur in the media anymore. lesbian relationships. religious grougs, and social networks. d. poll data show that bisexuality and homosexuality are viewed positively by all parts of society