Question

select the correct answer
which is an example of nature pollution?
a. when sewage is discharged directly into waterways without being treated
b. when nitrogen mixes with a body of water leading to excessive growth of algae
c. when oil from offshore drilling reaches waterways that supply landlocked

Explanation:

To determine natural pollution, we analyze each option:

• Option A: Sewage disposal (human - made) is not natural.
• Option B: Nutrient mixing (e.g., from natural processes like weathering, animal waste) leading to algae growth is a natural ecological process, so this is natural pollution.
• Option C: Pesticide use (human - made) is not natural.

Answer:

B. when nutrients mixes with a body of water leading to excessive growth of algae