S6E3a Water IAN 2


salinity is the amount of salt in water.  3.5% is the salinity of the ocean

5 sources of freshwater

glaciers and ice caps, groundwater, rivers, lakes, and the atmosphere, make up 3% of Earth’s water.

1% useable

groundwater, rivers, lakes, and the atmosphere contain the 1% of the Earth’s water we can use


most of the freshwater we can use is found underground


absorb rainwater, help prevent flooding, filter out pollution


water from rain and melted snow that runs into river, wetlands, and oceans


water that soaks into the ground to become groundwater.