⛏️🪨🌾

#phosphate rock #fertilizer #resources #phosphorus cycle

🦴🌱💧

#phosphate #fertilizer #bone mineral #plant nutrient #phosphorus cycle #essential element #atp

🌊🐠PNFe

#ocean biogeochemistry #marine chemistry #marine nutrient cycles #phytoplankton ecology #nitrogen cycle #phosphorus cycle #iron cycle