52. Ecosystems

In the context of biogeochemical cycles, how do nutrients move through an environment, and what primarily drives their movement?

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 _____.

Which Earth sphere is not involved in biogeochemical cycling?

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?

Which two spheres of Earth are primarily involved in the phosphorus cycle?