Which of the following human activities disrupt the phosphorus cycle and have negative effects on an ecosystem?

Which of the following human activities disrupt the phosphorus cycle and have negative effects on an ecosystem?

A. Soaps and laundry detergent enter the water supply.

B. Farmers use crop rotation to maintain nutrients at high levels in the soil.

C. Fossil fuels are extracted from deep in the ground, releasing nutrients stored in bedrock.

D. both A and C