When materials diffuse across a membrane, they move from an area of concentration to an area of
concentration along the concentration gradient.

It is high concentration then low concentraion

Explanation:

just did on edg

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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.