52. Ecosystems

Which of the following biological processes is NOT linked to the nitrogen cycle?

What role do decomposers play in the phosphorus cycle?

Which organisms play a crucial role in returning carbon to the atmosphere during the carbon cycle?

During chemical cycling, inorganic nutrients are typically returned to the soil by which of the following processes?

Which of the following biogeochemical cycles have been most heavily affected by human activities?

Biogeochemical cycles are crucial to ecosystem function because _____.

In the context of biogeochemical cycles, nutrients move through an ecosystem in which of the following ways?

Which Earth sphere is not involved in biogeochemical cycling?

In the context of biogeochemical cycles, which component is primarily recycled within an ecosystem?

Which of the following processes is primarily responsible for returning nitrogen from dead organisms back into the atmosphere in the nitrogen cycle?

Which of the following best describes the primary effect of biogeochemical cycles on Earth's ecosystems?

How do decomposers contribute to the carbon cycle?

In the phosphorus cycle, where does the cycle primarily begin?

Which nutrient cycle does not have an atmospheric component?