What can cause the regional or local extinction of species, or shifts to
different ecosystem communities.?*

(A)droughts

(B)weather cycles

(C)global warming

(D)large volcanic eruptions

one part of the electromagnetic spectrum that arrives on earth as solar radiation from the sun is the visible spectrum. wavelengths of the visible spectrum combine to form what we refer to as

answer - d) ultraviolet radiation.

violet /   380–450 nm / 668–789 thz

violet is number 1 in the chart of visible light.

on island x the species needed to adapt because they were being subject to predators which didn't inhabit island y.