Question

question 5
listen
what is a marine dead zone?
a an area with an abundance of marine life.
b a region where aquatic life cannot be supported.
c a zone with high levels of biodiversity.

Explanation:

A marine dead zone is defined as an area in water bodies where oxygen levels are extremely low (hypoxic conditions). Such low - oxygen environments are unable to support most aquatic life forms. Option A mentions an abundance of marine life, which is the opposite of what a dead zone is. Option C refers to high levels of biodiversity, which is also incorrect as dead zones have very low biodiversity. Option B correctly states that it is a region where aquatic life cannot be supported.

Answer:

B. A region where aquatic life cannot be supported.