Adolescents require fewer hours of physical activity than adults.

Please select the best answer from the choices provided.

T
F

Mucous membranes.. a. cover or line external surface of body. b. line internal body surfaces that are in contact with the environment. c. produce antibodies to combat infection. d. secrete sweat, which has antibacterial enzymes.

Cancer is 100% preventable if you follow all the necessary healthy behaviors. true or false

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?