Learn everything about water.

What is water?

Water is a form of liquid made up of 2 hydrogen atoms and 1 oxygen atom or more commonly know as H2O. Water is a a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms.

Why is water so important?

Water is needed in many ways and quantities by living things. Water may be consumed by living things, or may be a habitat for them. Animals that use water as their habitat or home are called aquatic animals. Sometimes, there are many nutrients or chemical compounds dissolved in water, and the concentrations often decide which animals can live them. For example, some fish like herrings live in salty sea waters, while perch and salmon live in fresh water with very little or no salt concentrations.

How much water takes up earth?

About 71 percent of the Earth's surface is water-covered, and the oceans hold about 96.5 percent of all Earth's water. But water also exists in the air as water vapor, in rivers and lakes, in icecaps and glaciers, in the ground as soil moisture and in aquifers. About 3% of water on Earth is fresh water while around 97% is ocean water.

How does water get on earth?

The Water Cycle is the cycle of processes by which water circulates between the earth's oceans, atmosphere, and land, involving precipitation as rain and snow, drainage in streams and rivers, and return to the atmosphere by evaporation and transpiration.

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