The Caspian Sea <span>is the largest lake or inland sea in the world. Is it below sea level and is located east of the Caucasus Mountains. It is a natural boundary between Europe and Asia.
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I know one is Pumice not sure about the other one.
The city of Los Angeles released 96 million "shade balls" into the Los Angeles Reservoir. These will serve to shield the water from the sun's heat in order to reduce evaporation and prevent algal and bacterial growth so no toxic substances are produced in the water. The balls reduce evaporation by 85%-90% so will save a lot of water yearly.
Divergent creates cracks which later on open the earth apart
Convergent, the imperceptible force within the earth brings it together forcing the earth to fold
The jet stream has high altitude rivers of air.