Question

microbes in the soil get destroyed

Answer 1

Microbes in the soil help the dead organisms on it to decompose.

If the microbes will get destroyed the soil will lose its ability to decompose dead organisms.

If the microbes in the soil get destroyed it will also lose its nutrients, and its ability to help plants grow.

With no soil fertility and no decomposition of the dead plants or animals, the earth would be a living hell.

There would be stench and foul odor all around and no trees to support the environment.