ocr: WATER CYCLE V IIHOUT WATER, life on Earth Water in clouds would not exist. Organisms consist mainly of water. They need water for their life processes, and some organisms live in water. Heated by the sun, water evaporates from the oceans, lakes, and streams, and condenses to form clouds. They Evaporation release their water back to the land as from land and rivers rain, hail, or snow. This water runs Rain, hail, off the ground along streams and Evaporation or: snow rivers until it eventually flows back from oceans into the oceans. Water also soaks into the ground, filling spaces around undergr ...