Compensation depth is always below the . a. depth of light penetration
b. depth of greatest productivity
c. aphotic zone
d. intermediate bottom waters
e. oxygen minimum zone

it's not c. i took the quiz and got it wrong. so my best guess is b.

have a great day, and hope this .

bru what tyep of qus is dis

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.