I think it is because in the ocean the plankton produces most of the oxygen which is used by aquatic plants and plankton is a primary producer known as autotrops.
I believe this would be the cerebellum. This part of the brain is used for motor control like moving the fingers say and cognitive functions (to do with thinking) and also can affect the feelings of pain and pleasure.
I would say its A because it is doing something harmful
Answer:
The sclera, or white part of the eye, protects the eyeball.
The pupil, or black dot at the centre of the eye, is an opening through which light can enter the eye.
The iris, or coloured part of the eye, surrounds the pupil.
Explanation:
