Q.12. What are the major groups of microorganisms?
Q.13. Write 10 lines on the usefulness of microorganisms in our lives.
Q.14. Define food preservation.
Q.15. Define communicable diseases. Give some examples.
Q.16. What is vaccination?
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Answer:Q12Microorganisms or microbes are microscopic organisms that exist as unicellular, multicellular, or cell clusters. Microorganims are widespread in nature and are beneficial to life, but some can cause serious harm. They can be divided into six major types: bacteria, archaea, fungi, protozoa, algae, and viruses.
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