AP BIOLOGY

Detailed explanation-1: -The Carbon cycle (IS or IS NOT) the only biogeochemical (nutrients) cycle that affects humans. One of the nutrient cycles moves from an atmospheric gaseous (N2) form to the soil through both abiotic and biotic processes, moves through the food web, then is returned to the soil or to the atmosphere.

Detailed explanation-2: -The nitrogen cycle is a repeating cycle of processes during which nitrogen moves through both living and non-living things: the atmosphere, soil, water, plants, animals and bacteria.

Detailed explanation-3: -Nutrients move through the ecosystem in biogeochemical cycles. A biogeochemical cycle is a circuit/pathway by which a chemical element moves through the biotic and the abiotic factors of an ecosystem. It is inclusive of the biotic factors, or living organisms, rocks, air, water, and chemicals.

Detailed explanation-4: -A nutrient moves from the abiotic to the biotic phase when it is absorbed and assimilated by producers.

Detailed explanation-5: -Biogeochemical cycles, also known as nutrient cycles, describe the movement of chemical elements through different media, such as the atmosphere, soil, rocks, bodies of water, and organisms. Biogeochemical cycles keep essential elements available to plants and other organisms.