Question

Which of the following is true of dead zones? a. They are formed when a volcanic eruption covers the soil with ash. b. They are caused by an increase in the saltiness of the land, making the land infertile. c. They are formed when a specific area lacks nutrients and vitamins. d. They are formed when excess oxygen accumulates in a specific region. e. They are caused by algae blooms that occur when agricultural fertilizers and waste runoff enter natural waterways

Answer 1

Answer: c. They are formed when a specific area lacks nutrients and vitamins.

Explanation: A dead zone is a hypoxic area that lacks nutrients and vitamins.

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