(Q).
Lighter, more streamlined vehicles need less energy. Joe drives a hybrid while Jim drives a large truck. Who uses less energy when driving Joe or Jim?
(A).
Joe

(Q).
Inhaling, or breathing in, increases the size of the chest, which decreases air pressure inside the lungs. Rich breathed out. When he breathes in or out his chest seems larger?
(A).
out

(Q).
With higher levels of dissolved carbon dioxide in ocean water, the water becomes more acidic. If Jim adds more carbon dioxide to the ocean, the level of acidity in the ocean becomes greater or smaller?
(A).
greater