The earth has a limited amount of water.That water keeps going around and around and around in what we call the "Water cycle".It is the only way that Earth can be continually supplied with fresh water.The sun is the most important part of renewing our water supply.It can be solid (ice),a liquid (water), or gas (water vapor). Water on earth is always changing. How do these changes happen? It is …showed first 75 words of 281 total…

…showed last 75 words of 281 total…in the form of rain, hail, snow.It is either absorbed into the ground or runs off into rivers.Water that was absorbed into the ground is taken up by plants.Plants lose water from their surface as vapor back into the atmosphere. Water that runs off into rivers flows into the atmosphere. Water that runs off into rivers flows into ponds, lakes,or oceans where it evaporates back into the atmosphere.The cycle continues.