Photosynthesis is carried out by which of the following? a. all living organisms b. animals, but not plants c. plants, but not animals d. bacteria, but neither animals nor plants

1. a tropical dry forest carries out more rapid nutrient cycling

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.