Question

River flows at an average 0.405 cubic feet per sec. What is the additional concentration of nitrogen (mg of nitrogen per liter) in the river water due to the farmer fertilizing each year?

A. 0.405 mg of nitrogen per liter.
B. Nitrogen concentration remains unchanged.
C. The nitrogen concentration depends on the fertilizer.
D. Additional nitrogen concentration depends on the fertilizer amount.

Answer 1

The additional concentration of nitrogen in the river water depends on the fertilizer used.

Step-by-step explanation:

The additional concentration of nitrogen in the river water due to the farmer fertilizing each year would depend on the fertilizer used. Different fertilizers have different nitrogen content. Therefore, option C, "The nitrogen concentration depends on the fertilizer," is the correct answer. For example, if the fertilizer has a nitrogen content of 5%, then the additional concentration of nitrogen in the river water would be 5% of the amount of fertilizer used.