One of the most harmful consequences of runoff pollution is algae overgrowth. algae overgrowth occurs when which of the following happens?
a. algae overgrowth occurs when oil runs into the water, causing algae to overproduce.
b. algae overgrowth occurs when oil runs into the water, causing algae to under produce.
c. algae overgrowth occurs when too many nutrients are in the water, causing algae to overproduce.
d. algae overgrowth occurs when too many nutrients are in the water, causing algae to under produce.

Option C

Explanation:

The fertilizers are source of nutrient for the plants but it acts in a harmful way for the environment and nearby water bodies.

The fertilizers then acts as nutrients for the growth of algal bloom, so when the nutrient rich runoff reaches the water bodies algae starts to grow and the growth is so fast that it is results in over growth of algae.

This overgrowth leads to deficiency in water bodies and harms the other aquatic animals.

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.