Unlike food webs, food chains
a. contain autotrophs that make their own food.
b. involve a network of complex interactions among various organisms in an ecosystem.
c. involve a single chain of energy transfer from one organism to another through consumption.
d. contain consumers that eat producers.

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.