Question

Which of these events is a likely result of biological water pollution?

A. Fish die from lack of oxygen due to an algal bloom
B. Rainbow trout disappear from a stream because of high water temperatures
C. Sediment particles floating in water clog the gills of fish
D. Algae are killed by solvents that have runoff into a pond

Answer 1

The correct answer is choice A.) Fish die from lack of oxygen due to an algal bloom. B would not likely be caused by any sort of biological water pollution, and choice D would most likely be caused by humans. Choice C could be an option as well, but can be caused by human activity, such as removal of plants keeping erosion of soil at bay, which washes more and more sediment to bodies of water. Hope this helped!

Answer 2

Answer: Option A

Step-by-step explanation:

The events such as the pollution in water takes place due to the agricultural run off that moves from the agricultural field into water.

The water that flows from the agricultural field into the water bodies carries nitrogen and phosphorus in it which helps in the growth of algal bloom.

Due to this the water appears green in color from the surface, the algae uses all the oxygen present in the water which makes the other aquatic organism devoid of oxygen.

The fishes and other organism in water die to lack of oxygen.