Determine of the statement is true or false, and why. Nitrogen makes up most of the atmosphere, but is in an unusable form until converted into an organic form by bacteria.
A. False, it should read, "Nitrogen makes up most of the atmosphere, and is easily converted into an organic form by plants."
B. False, it should read, "Nitrogen makes up a small percentage of the atmosphere, but comes in an easily usable form for most living organisms."
C. True.
D. False, it should read, "Nitrogen makes up most of the atmosphere, in a form easily accessible to plants, who convert for animals to use."

It should be understood that the the percentage of nitrogen is the highest in the atmosphere. This is because, it make up of more than 60% of the atmosphere. And it should be noted that the atmospheric nitrogen is inform that can not be used by the plant.

Therefore, there is a need for a certain group of bacteria which live in the root noodles of the plants to convert the unused form of the atmospheric nitrogen to a form that can be used by the plants.