Answer:
C
Explanation:
Nearsightedness is what happens when the image does not reach the retina whereas farsightedness happens when light is focused beyond the retina.
Explanation:
A negative feedback system has three basic components: a sensor, control center and an effector
The soil has to be not too acid or not too basic
The answer would be C because it goes population community ecosytem then biosphere poulaton always comes first