What Situation Causes Stress to Reefs

Question

What situation causes stress to reefs?  
A) A parasitic relationship with dinoflagellates
B) Clear waters in which all nutrients have settled
C) Decline in fishing operations
D) Lowering of sea level due to climate changes
E) Pollutants released in coastal waters

Accepted Answer

Pollutants such as agricultural runoff, sewage, and oil spills can cause stress to reefs by introducing excess nutrients, chemicals, and sediments into the water, leading to harmful algae blooms, reduced water quality, and physical damage to coral.