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| The Water Cycle, http://goo.gl/IGb2Wc |
Our planet has a limited amount of water, and that water keeps going around and around in what we know as "Water Cycle". This process has
three phases: evaporation, condensation and precipitation. First,
evaporation is when
water turns into "hot air" due to the sun. Then, that hot air gets
cooler and join together to become into water again, and this what we call
condensation. Finally, the
precipitacion, this happens when the water
droplets become bigger and heavier and because of the earth's gravity they fall down and end up in our rivers and oceans.
Now you will find some useful material that might help you to understand better.
http://youtu.be/U80LVjVX75k
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