In marine ecosystems phosphorus is added to the ecosystem primarily from:
A)erosion of rocks on land.
B)dead organisms that fall to the bottom of the ocean.
C)fixation of atmospheric phosphorus.
D)glacial ice melt.

Question

Quizplus · Accepted Answer

Phosphorus enters marine ecosystems mainly through the erosion of rocks on land, which is then carried into the oceans by rivers and streams. This process is a primary source of phosphorus in marine environments, as opposed to atmospheric fixation or other sources listed.

In Marine Ecosystems Phosphorus Is Added to the Ecosystem Primarily