Water is a chemical substance with the chemical formula H2O. Its molecule contains one oxygen and two hydrogen atoms connected by covalent bonds. Water is a liquid at ambient conditions but it often co-exists on Earth with its solid state ice and gaseous state. Water also exists in a liquid crystal state near hydrophilic surfaces. Water covers 70.9% of the Earth's surface and is vital for all known forms of life.

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5 Tips to Save the Earth

There are many easy things that people can do to help save the earth from further deterioration. All it takes is a little forethought and action. Below are five things that will save our planet.