Question

Which phrase best defines a dead zone? (1 point)

A) a region that has successfully remediated the impacts of pollution
B) an area in a waterway where no plants or animals live
C) a waterway whose surface has no microorganisms
D) a region that lacks adequate sewage treatment

Answer 1

I think the answer is b

Answer 2

B) an area in a waterway where no plants or animals live.

Step-by-step explanation:

A dead zone is an area in a waterway, typically near the mouth of a river or other inlet, where oxygen levels are extremely low or depleted, making it difficult or impossible for most marine life to survive. The lack of oxygen is often caused by excessive nutrient pollution from human activities such as agriculture and sewage treatment, which can lead to harmful algal blooms and subsequent oxygen depletion. The result is a "dead zone" where most fish and other marine life cannot survive.