Question 24 • 2025-2026 Phillips Environmental Science A 2nd semester
Carbon, nitrogen, and oxygen cycles are all biogeochemical cycles: they move elements through living organisms and nonliving parts of Earth, such as the atmosphere, water, and soil. They are also all part of the Earth system. Since choices a, b, and c are each true, the best answer is “All of the above.”
AI-written and checked against the verified answer.