(Q).
If smog harms the respiratory and circulatory systems, then what affects the respiratory and circulatory systems in the body? Answer choices: - HIV - sulfur - smog - stress - fever - sweat - heat - tar
(A).
smog

(Q).
If vesicle transport requires energy and a carrier molecule, then vesicle transport requires energy and a what? Answer choices: - activity - major threat to health - metabolic reaction - hydration - biofuel - wavelengths and photons - carrier molecule - Vibrations.
(A).
carrier molecule

(Q).
If hydrogen bonds cause frostbite of tissue, then what causes frostbite of tissue? Answer choices: - an object - hydrogen bonds - heating liquids - Veins and arteries. - Generating heat - evaporation - heat produced - dehydration
(A).
hydrogen bonds