The water cycle

1. 3.Precipitation

1.1. The return of water from the atmosphere to Earth's surface in the form of rain, snow, sleet, and hail

2. 4.Condensation

2.1. A change in state from vapor to liquid

3. H2O is the chemical formula of water

3.1. Molecules of water are created in melted ice or gas

4. Scientist believe that water came to Earth from a astroid

5. Two atoms of hydrogen and one atom of oxygen cannot be combined to make water is because they exploed

5.1. Water cannot decrease or increase

6. 2.Transpiration

6.1. The release of water vapor by plants through their leaves

7. 1.Evaporation

7.1. A change in state from a liquid to a gas