The most common liquid in the world is water.We find water in rivers,lakes,canals,seas aqnd oceans. it is composed of hydrogen and oxygen.
Water has many uses . All living things cannot live without water.we need water for drinking and washing. Without water we cannot have vegetables,fruit,rice or meat. Animals eat grass, and grass or plants need waterin order to grow.Fish live in water.
Heat changes waterinto steam,and cold changes it into ice.