What level of organization do the following represent: skin, arteries, veins, heart a. organ b. tissue c. cell d. organ system

List things you can lose your license for if you are under 21

Active immunity refers to: a. the defenses people are born with. b. temporary immunity granted from another source. c. immunity gained through immunization and exposure to diseases. d. natural immunities that protect humans from other animal diseases

Suppose you are facilitating an advisory group to address teen pregnancy. whom would you invite to the group and why ? .