How do microorganisms help in cleaning the environment? [3 MARKS]
Explanation: 3 Marks
Dead organic matter in the form of decaying plants and sometimes dead animals on the ground disappear after some time. This is because microorganisms decompose dead organic waste of plants and animals converting them into simple substances. These substances are again used by other plants and animals. Thus, microorganisms can be used to degrade the harmful and odourific substances and clean up the environment.