Water is naturally purified by
a.evaporation and condensation.
b.transpiration and evaporation.
c.precipitation and infiltration.
d.condensation and transpiration.
The kinetic energy of water is at its lowest when:
d.water percolates through soil
Which of the following would we expect on the leeward sides of high mountain ranges?
Which of the following contributes the most as a greenhouse gas?
a.oxygen levels in the air
b.water vapor levels in the air
c.nitrogen levels in the air
d.the amount of pollutants in ocean water
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