In order to be able to answer this, we'd need to know what book it is you're reading, as well as the answer choices as the question asks "which of the following best" meaning that they want you to choose the best answer from the choices they’re giving you.
Organic matter and nutrients causes an increase in aerobic algae and depletes oxygen from the water column. This causes the suffocation of fish and other aquatic organisms. Sulfate particles from acid rain can cause harm the health of marine life in the rivers and lakes it contaminates, and can result in mortality.
Answer:
Pretty sure its A
Explanation:
Based on my knowledge of the English language. ;-;
Is doubting the truthfulness of your excuse
Answer: D
Explanation: The author is describing what seems like one *pesky* problem. A conflict is a problem
