The document discusses the water cycle, including evaporation, condensation, and precipitation. It then covers different types of water bodies like rivers, lakes, streams, seas, and oceans. It explains that rivers and lakes contain fresh water while oceans and seas contain salt water. The document also looks at how groundwater flows into oceans and seas. Finally, it discusses different ways water is used and ways to conserve water, such as turning off taps while brushing teeth, taking short showers, and reusing the same glass.