The largest reservoir of phosphorus in most ecosystems is phosphorus
A) in the atmosphere.
B) dissolved in water.
C) in rocks and sediments.
D) bound in animal tissues.
E) bound in plant tissues.

Question

Quizplus · Accepted Answer

Phosphorus is mainly found in rocks and sediments, and is released into the soil or water through the weathering of minerals. It is taken up by plants and then transferred up the food chain as animals consume the plants. Eventually, some of it returns to the soil or water when plants and animals die and decompose, but the majority remains in the rocks and sediments. Therefore, the largest reservoir of phosphorus in most ecosystems is rocks and sediments.

The Largest Reservoir of Phosphorus in Most Ecosystems Is Phosphorus