Select the best answer for the question 4. All the following impact water clarity except for
O A. light penetration
B. phytoplankton
C. suspended sediments
D. nutrients

A. light penetration

Explanation:

Water clarity refers to how clear a water is, and it is a measure of how far/deep light can penetrate into such a water body. A water that is not clear is said to be TURBID. Several factors affect the clarity of a water body and they include;

- Phytoplankton, which refers to floating algae on the water body. An accumulated growth of phytoplankton can affect the penetration of light into the water, hence, making the water unclear.

- Suspended sediments can also block the penetration of light into the water, reducing water clarity.

- Nutrients in form of fertilizer or waste materials can also make water unclear.

Therefore, LIGHT PENETRATION DOES NOT IMPACT WATER CLARITY, rather it is dependent on water clarity.

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).   so the answer is a.