The crane is doing work as it hold the massive bundle of trash high in the air. The bundle of trash is released and falls into the landfill. In this case, the crane is doing work and the bundle has mechanical energy in the form of

potential and the kieetic

Explanation:

"d.) carbon dioxide and hydrogen sulfide"

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.