1.

Describe 2 changes thats are harmful of burning of iron

Answer»

1.Rusting Of Iron:If bicycle CHAIN get rusted,it MAY result in breakage of bicycle chain.
Prevention:Apply GREASE on it regularly.

2.Burning Of wood:When wood is burnt,it releases HARMFUL gas and pollutes the earth.
Prevention:Use clean fuels LIKE CNG,LPG,etc



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