Answer:
well longitudinal waves are waves that move the medium parallel to the direction in which the waves travel
Explanation:
in waves, there is compression and rarefaction which is what makes up the distance of the wave. i hope this helps. if it doesn't, lmk and i'll fix it
Phenotype are traits what is actually expressed
By dying after mating in order to feed the young.
Food because it gives you energy and warmth, blubber (what seals have), and fur
