Question

identify the cycle described.
this nutrient is cycled between living things and the soil. plants absorb this nutrient from the soil and turn it into organic compounds through assimilation. animals eats the plants and pass the nutrient through the food chain from one organism to another. when the animal dies, it decomposes and returns the nutrient back to the soil. the nutrient can also enter the soil through weathering and erosion.
plants take in this nutrient when they perform photosynthesis. an animal eats the plant and uses its carbohydrates for energy. the animal releases the nutrient back into the atmosphere during respiration.
bacteria in the soil converts this nutrient into a usable form. plant take up the usable nutrient through the soil and assimilate it into proteins, making it part of the plant. an animal eats the plants, and the nutrient becomes part of the animal. when the animal dies, it decomposes, returning the nutrient back to the soil.

Explanation:

First Dropdown:

The description involves a nutrient cycled between living things and soil, with plants absorbing it, animals passing it through the food chain, and decomposition/weathering returning it to soil. This matches the phosphorus cycle (phosphorus is cycled between biotic and abiotic components, with soil interactions, assimilation, and return via decomposition/erosion).

Plants take in the nutrient during photosynthesis, animals consume plants, use carbohydrates for energy, and release the nutrient back to the atmosphere during respiration. This describes the carbon cycle (carbon is taken in as CO₂ during photosynthesis, used in carbohydrates, and released as CO₂ during respiration).

Bacteria in soil convert the nutrient to a usable form, plants take it up, assimilate into proteins, animals eat plants, and decomposition returns it to soil. This is the nitrogen cycle (nitrogen fixation by bacteria, assimilation into proteins, and return via decomposition).

Answer:

Phosphorus Cycle

Second Dropdown: