(Q).
Given the fact that:  Bacteria with a mutation the helps resist antibiotics increase in numbers, so the mutation becomes more common.  Answer the question:   Dana washes her hands a lot, so her bacteria has muted to help to resist antibiotics. As that bacteria increases in numbers, the mutation becomes common or rare?
(A).
common


(Q).
Given the fact that:  During inhalation, because the chest volume is larger, the air pressure inside the lungs is lower than the air pressure outside.  Answer the question:   Will is inhaling and then he exhales. Which stage likely causes less air pressure in his lungs inhaling or exhaling?
(A).
inhaling


(Q).
Given the fact that:  The upper rock layers are much younger.  Answer the question:   The archaeologist was digging and saw that the oldest rocks were in layers that were shallower or deeper?
(A).

deeper