What is the role in the biosphere of each of the kingdoms of wildlife? What consequences would affect the disappearance

What is the role in the biosphere of each of the kingdoms of wildlife? What consequences would affect the disappearance of one of these kingdoms of wildlife in the face of the Earth?

Living matter performs in the biosphere the most important biochemical functions that ensure the circulation of substances and energy.
The gas function is carried out by green plants: for the synthesis of organic substances, they use carbon dioxide, while releasing oxygen into the atmosphere. The rest of the organic world uses oxygen in the process of respiration and replenishes with it the reserves of carbon dioxide in the atmosphere. Due to the ability of autotrophic organisms to photosynthesis, an enormous amount of carbon dioxide was extracted from the ancient atmosphere. As the biomass of green plants increased, the gas composition of the atmosphere changed: the carbon dioxide content decreased and the oxygen concentration increased. Thus, living matter has qualitatively changed the gas composition of the atmosphere – the geological shell of the Earth.
The redox function is closely related to the gas function of living matter. So, some microorganisms are directly involved in the oxidation of iron, which led to the formation of sedimentary iron ores, others reduce sulfates, forming biogenic deposits of sulfur.
Concentration function is manifested in the ability of living organisms to accumulate various chemical elements. For example, storage plants such as sedge, horsetail, contain a lot of silicon; seaweed and sorrel are sources of iodine and calcium. The skeletons of vertebrates contain a large amount of phosphorus, calcium, magnesium. Thanks to the implementation of the concentration function, living organisms created many sedimentary rocks, such as chalk and limestone deposits ..

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