Which statement characterizes differences between lakes and rivers related to water pollution? 

A)  Acid deposition and fallout represent more serious hazards to lakes than rivers. 
B)  Eutrophication is a natural increase of water pH. 
C)  Rivers are more vulnerable than lakes to contamination by plant nutrients, oil, toxins, and pesticides. 
D)  Natural processes are the main cause for cultural eutrophication in rivers but not in lakes.

Acid Deposition

The falling of acids and acid-forming compounds from the atmosphere to the earth's surface, often resulting in environmental harm.

Eutrophication

The process by which a body of water becomes excessively enriched with nutrients, leading to plant growth that depletes oxygen in the water, affecting fish and other wildlife.

Cultural Eutrophication

The process by which a body of water becomes enriched in dissolved nutrients (like phosphates) from human activity, leading to excessive plant growth and decay that depletes oxygen, harming water quality and aquatic life.