Question

which of the following statements about the value of the nitrogen - cycle to an ecosystem is not true? multiple choice nitrification occurs as nitrogen gas is converted to nitrate. nitrification occurs as ammonium is converted to nitrate. denitrification removes nitrogen from the atmosphere and converts it to a form that plants can use. nitrogen fixation can occur in aquatic systems or in soil bacteria. both ammonium and nitrate ions are highly water - soluble

Explanation:

Nitrification is the conversion of ammonium to nitrate, not nitrogen gas to nitrate. Denitrification removes nitrogen from the ecosystem by converting nitrate to nitrogen gas. Nitrogen - fixation can occur in aquatic systems or by soil bacteria. Ammonium and nitrate ions are highly water - soluble.

Answer:

A. Nitrification occurs as nitrogen gas is converted to nitrate.