Which two words identify the scientific parts of a wave? breaker and crest
crest and trough
O current and breaker
drift and current

crest

trough

Explanation:

-Crest: a crest point within a cycle on a wave with the highest value of upward displacement. A crest is a point on a surface wave where the medium's displacement is at a peak.

-Trough: the opposite of a crest is a trough, so the minimum or the lowest point in a cycle.

i believe it's c. the trait for large beaks will be passed on to future generations through natural selection.

since eventually smaller beaks would have to find another source of food or even eventually just die out from the lack of food.

answer; ///animal spirits;