All of the statements about the nitrogen cycle are true except one. that is

a) lightning breaks nitrogen molecules so it can combine with oxygen.
b) putting man-made fertilizers on farm fields exceeds natural nitrogen levels in the soil.
c) bacteria located in the soil trap excess nitrogen and to remove it from plant roots.
d) although nitrogen is the most abundant atmospheric gas, plants cannot use it from the air.

Option (C) is the correct answer.

Explanation:

Nitrogen cycle is defined as the continuous process in which nitrogen and its compounds are interconverted in the environment and living organisms.

For example, when lightening breaks nitrogen molecules then it combines with oxygen.

Thus, we can conclude that all the given statements are true except the statement bacteria located in the soil trap excess nitrogen and help to remove it from plant roots.