The Most Substantial Pathway of Loss of Elements in an Ecosystem

Multiple Choice

The most substantial pathway of loss of elements in an ecosystem is through streamflow.A system such as a stream moves phosphorous and iron mostly attached to particles,while nitrogen is mostly dissolved.Thus,a stream carries the load of nutrients _______________.

A) As mostly saturated
B) As both dissolved and particulate
C) At high concentrations at all times
D) At low concentrations at all times