Answer: C
Explanation: denitrifying bacteria, microorganisms whose action results in the conversion of nitrates in the soil to free atmospheric nitrogen, thus depleting soil fertility and reducing agricultural productivity.
Answer:
B = All of these were usedin this modul
It is a sedimentary deposit<span> of mineral particles which are finer than sand but coarser than dust or clay,</span>deposited<span> by the wind. </span>Loess<span> is a type of silt which </span>forms<span> fertile topsoil in some parts of the world. ... The soil has few clay particles to hold it together.</span>