Which laws or rules prevent or reduce injury in the event of a crash

Felicia has a respiratory infection and has been coughing up a lot of mucus. she knows this means that her respiratory system is working to restore balance by getting rid of the invasive materials from her lungs. how does this happen?

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

Which statement best explains the relationship between diet and osteoporosis? a. cholesterol blocks calcium from reaching bone cells. a diet that is high in cholesterol can lead to osteoporosis. b. calcium and phosphorus build strong and flexible bones. a diet that lacks these nutrients can lead to osteoporosis. c. protein and iron build strong and flexible bones. a diet that lacks these nutrients can lead to osteoporosis.