Question

usable forms of nitrogen can intentionally be increased in the soil by

a. allowing organic matter to decompose
b. lightning
c. planting fewer beans
d. planting more trees

Answer 1

Usable forms of nitrogen in the soil can intentionally be increased by:

**a. allowing organic matter to decompose**

Decomposing organic matter releases nitrogen in forms that plants can use, such as ammonium and nitrate. Other options, while they may influence nitrogen levels indirectly, do not directly increase usable nitrogen in the same way.