Janine is pushing a toy car along the floor. As the car moves, work is being done. The fact that the car is moving and work is being done shows that
A. cars are always working.
B. a force is not present.
C. energy is present.
D. the car is moving quickly.

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.

what in the weirdo : o