Question

As global temperatures increase, sea levels rise. Which of the following is a way that rising sea levels negatively impact marine biodiversity?
A.) Fewer tropical storms and severe weather
B.) Less oxygen levels at various depths
C.) More light reaching plants and algae
D.) A decrease in the pH of the oceans

Answer 1

I think the answer is D. As all levels will be thrown off by the added water. 

Answer 2

Answer:

Option A, Fewer tropical storms and severe weather

Explanation:

The water frozen in the glaciers is the purest form of water while ocean water consists of lot of salts and gases(such as carbon dioxide) which makes it acidic. Thus, when pure water of glaciers mixes with the acidic water of ocean , it dilutes the ocean water and hence  reduces its acidity. Thus, the pH of the water increases.

Therefore  option D is incorrect

Also the water level will increase and hence less light will reach to the plants and algae therefore option C is also incorrect.

Oxygen level will increase as the glacier water is the purest form of water and consist of dissolved oxygen.  Hence option B is also incorrect

Due to sudden melting of glacier there will be extreme weather and climatic conditions , hence option A is correct.