Q9. Explain the following.
a) The use of oil reduces friction between two surfaces in contact with each other.
b) The role played by microorganisms in cleaning the environment.
c) Solar system with the help of a diagram.
Answers
Answered by
1
hey o don't explain now
bhumisrivastava:
plz do only first
Answered by
2
Answer:
microorganisms are help in cleaning the environment by decompose the wastes of kitchen and plant residues and the excretion of plants and animals
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