Yes, I agree to the statement of Jeevan that “if there are no microorganisms earth will remain with wastes.”
There are many microorganisms which are saprophytes and live on the dead organic matter. They cause degradation and decomposition of those waste materials and convert those complex organic substances into simpler inorganic substances and thus clean the earth.
If there will be no microorganisms there will be no decomposition, degradation, and conversion of complex organic substances into simpler inorganic substances and wastes keep on accumulating everywhere and in this way our earth will become dirty.
So, Presence of microorganisms is quite essential for cleaning of the earth surface.
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