Different between retina and choroid of eye​

hello :)

Retina is the thin layer of cells at the back of the eyeball where light is converted into neural signals, which is sent to the brain while choroid is the vascular layer of the eye lying between the retina and the sclera.

Also, choroid has more blood vessels.

Explanation:

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."

b exhibiting favoritism toward the kikuyu people.