Which of the following is true of biogeochemical cycles? Choose 1 answers
They ensure that nutrients are only used once by organisms.
They increase the total amount of matter over time.
They can be affected by human activity,
They create new atoms to replace lost ones.

what is this saying?

links? do you have a link? i don't see anything?

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.

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