Burning of paper is an example of __________ change.

Explanation

Yes, rusting is a serious problem because it weakens the structure of bridges, iron railings, automobile parts etc. Every year a large amount of money is spent to replace rusted iron and steel structures. The reason is that the reddish brown crust of rust does not stick to the surface. It peels off (or falls down) exposing fresh surface for rusting. Thus, corrosion of iron is.a, continuous process which ultimately eats up the whole iron object.