The appropriate response is an opponent-process theory. Opponent-process theory is a mental and neurological model that records for an extensive variety of practices, including shading vision. This model was first proposed in 1878 by Ewald Hering, a German physiologist.
Answer:
I think it is C but I'm not 100% sure
<span>Photoplankton is one of the producers that can be found in the polar regions.</span>
