The change of state of water occurs because of weather changes.
True
False
During precipitation water vapour is cooled or its temperature is decreased and it changes into water.
When water changes into water vapour during evaporation, it dissolves a range of gases present in the air.
Gases and chemicals are soluble impurities.
Boiling water for 5 minutes can kill all the germs.
Water is the process of removing harmful substances from water.
purification
harvesting
The best and safest method to purify water is .
chlorination
boiling
The water drops fall down in the form of rain. This is called .
condensation
precipitation
The is the way through which water moves all around the earth.
water cycle
rainfall
