Which of the following is typically associated with a reduction in photosynthesizing plants in a water supply?
A.) A decrease in phosphates
B.) A decrease in dissolved oxygen
C.) An increase in phosphates
D.) An increase in dissolved oxygen

Question

Which of the following is typically associated with a reduction in photosynthesizing plants in a water supply?
A.) A decrease in phosphates
B.) A decrease in dissolved oxygen
C.) An increase in phosphates
D.) An increase in dissolved oxygen

matt101 · Answer

My bet would be B.

Oxygen is a byproduct of photosynthesis. If the plants are in water, some of the oxygen they produce will become dissolved in it. Without those plants, you have less dissolved oxygen.