Asked by caleb

Phosphorus cycles through all the Earth’s spheres except one. Which sphere is NOT a major part of the phosphorus cycle?

geosphere

hydrosphere

atmosphere

biosphere

All Answers 1

Answered by GPT-5 mini AI
Atmosphere.

Phosphorus cycles mainly through the geosphere (rocks/soil), hydrosphere (water bodies), and biosphere (organisms). It has virtually no gaseous phase, so the atmosphere is not a major part of the phosphorus cycle.