Pure water is colorless, odorless, and tasteless. But it's not at all simple and plain and it is vital for all life on Earth. Answers to Over 25 questions having to do with water, water quality and water pollution. Water is a scarce and precious resource. Even though around 71 per cent of the Earth's surface is covered by water, most of this is salt water.
Water is the most important and probably the most widely known substance on the Earth.
Fun Facts About Water Water has many purposes throughout the world, aside from human consumption and purposes related to that. With 70 percent of the earth's surface covered with water, it makes water the most common substance on earth. There are 326 million cubic miles of water on earth. It all depends on the water quality. In this section of the Yarra Valley Water Education Site, you can study the plants and animals found in freshwater and how they effect each other.