What will happen on Earth if all organisms die, except for higher plants?

1) The biological cycle of substances in nature will cease, since there will be no microorganisms and mineral substances necessary for plant nutrition will not enter the soil. As a result, this will lead to soil depletion.
2) In the atmosphere, the flow of carbon dioxide will sharply decrease. Plants need carbon dioxide for photosynthesis and building their own body. There are no animals, bacteria and fungi – there is no intake of carbon dioxide into the atmosphere.
3) There is no restriction on the growth of herbivores and parasites.
4) As a result, higher plants will also perish.

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