Why do some children fall ill more frequently than others living in the same
locality?
Explain giving reasons
(a) Balanced diet is necessary for maintaining healthy body.
(b) Health of an organism depends upon the surrounding environmental
conditions.
(c) Our surrounding area should be free of stagnant water.
(d) Social harmony and good economic conditions are necessary for good
health
Name any two groups of micro-organisms from which antibiotics could be
extracted.
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