Which of the following accurately describes nutrient limitation? a. soil environments aren't affected by nutrient limitation. b. limiting nutrients are the nutrients whose supply is in excess. c. if one essential nutrient within an ecosystem runs out, primary productivity will be limited. d. nitrogen is typically the limiting nutrient in freshwater environments.

Option C

A. Soil environments aren't affected by nutrient limitation. False

Soil can have limited nutrients if particular type of crop is grown continuously. That's why different crops are grown in different seasons. Also, fertilizers and manures are added with then aim to replenish the nutrients.

B. Limiting nutrients are the nutrients whose supply is in excess. False

If then nutrients were provided in excess quantity, then they will not control the productivity. Thus this statement is false.

C. If one essential nutrient within an ecosystem runs out, primary productivity will be limited. TRUE

Essential nutrient controls the growth of the plant. Therefore, it will regulate the productivity as well.

D. Nitrogen is typically the limiting nutrient in freshwater environments. False

It is not a limiting nutrient.

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