1) Although water is abundant on Earth, most of it is saltwater in oceans and seas, which is not suitable for drinking. Only about 1% of Earth's water is freshwater available for human use, found in rivers, lakes, glaciers, and groundwater.
2) The four forms water takes when it returns to Earth from clouds are rain, snow, sleet, and hail.
3) The main idea of this passage is that while water is essential and seemingly abundant, only a small percentage is usable freshwater, and it is crucial to protect this limited resource from pollution and overuse.
4) Groundwater is found underground, seeping into spaces between rocks and soil, and can be accessed through wells.
5) Chemicals such as pesticides, fertilizers, and other pollutants can seep into groundwater and make it unsafe to drink.
Parent Tip: Review the logic above to help your child master the concept of water water everywhere worksheet.