Q71. What are communicable diseases? Give examples.
Q72. Can microorganisms be seen with the naked eye? If not, how can they be seen?
Q73. Where do microorganisms live?
Q74. Why is curd an important ingredient in making rava idlis and bhaturas?
Q75. How a vaccine works?
Q76. Mention some important uses of fungi.
Q77. Write 10 lines on the usefulness of microorganisms in our lives.
Q78. What are antibiotics? What precautions must be taken while taking antibiotics?