Question

describe two changes that are harmful explain why you consider them harmful how can you prevent them

Answer 1

water pollution is one of the harmful activities it destroy the Marine life and life of fishes it is mainly caused in industrial areas

Answer 2

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   Please mark as brainliest