If all prokaryotes were eliminated from the planet a) animals would thrive because there would be no disease. b) archaea would thrive because there would be no competition for nutrients. c) all animals would die. d) animals and archaea would thrive.

C) all animals would die

Explanation:

The prokaryotic organisms are the organisms which evolved earlier than the eukaryotes in primitive conditions therefore they are found in almost all the environment today.

If all these prokaryotic organisms get eliminated from the environment then the biogeochemical cycle will be disturbed and will put a natural pressure on the other organism. The reason for this could be as the lager organisms cannot survive without these prokaryotes.

The higher level of organization of these larger organisms are directly dependent on these prokaryotes like the animals contains the prokaryotes in the digestive system.

If all these bacteria will be eliminated then the animals will not survive, the concept for the first time identified by the Louis Pasteur known as gnotobiotic systems.

Thus, Option-C is the correct answer.

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.