Which is darker, the anterior forearm or the posterior forearm? Explain why.

uh two lol

answer by yourhope:

answer is

human impact on the environment can be seen in the deterioration of the !

: )

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.

the endomembrane system i think