Which action can lead to unintentional injuries
a. driving and sending a text
b. getting in a fight
c. carrying a weapon.
d. avoiding illegal drugs

How does nitrogen oxides are produced and their air environment impact

What causes fermentation a. antibodies b. antigens c. microorganisms d. antibiotics

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.