What is a key difference between the phosphorus cycle and the carbon and nitrogen cycles? Phosphorus is present in both living and non-living things. Plants absorb phosphorus from the soil. Significant amounts of phosphorus are not found in the atmosphere. Weathering and erosion release phosphorus.

Phosphorus is present in both living and non-living things. Reason is because phosphorus is inside in our human bodies and animals also (used for carbohydrates and fats also needed for protiens and for growth). In non-living things is when its in its soild form

They can have cell walls , fatty acids , RNA  polymerase , protein , and even Metabolism. You can choose any three