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What process is indicated by the red box?
hydrothermal vents add salts to the water
what process is indicated by the red box?
water evaporates but salt does not
the saltiness or the dissolved salt content of a body of water is called?
salinity
how does runoff contribute to the salinity of the ocean?
dissolved minerals are washed off the land and carried by rivers towards the ocean
Why might a saltwater lake form?
when a lake is cut off from rivers and precipitation?
where is most fresh water trapped?
glaciers/ice caps
How does evaporation contribute to the saltiness of the ocean?
the water evaporates but the salt does not
What forms when a salt water lake dries up?
salt flat
where do oceans have the lowest salinity?
at the poles
Where is the ocean the saltiest?
areas with the most evaporation
How do hydrothermal vents contribute to the salinity of the ocean?
minerals and heat are released which form salts
What percentage of freshwater is available to be used?
1%
What percentage of all water on earth is freshwater?
3%
Water that is below the surface of the earth is called?
groundwater
What process is indicated by the red box?
condensation
What process is indicated by the red box?
runoff
What process is indicated by the red box?
evaporation
What process is indicated by the red box?
precipitation
What process is indicated by the red box?
precipitation
What are the three factors that contribute to the saltiness of the ocean?
runoff, evaporation, openings in the ocean floor
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