Where Does Rain Come From?
Rain comes from clouds. There is always some moisture in the air. It evaporates from lakes and oceans. The water floats in the air as invisi
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Oceans
How Salty Is the Ocean?
How Salty Is the Ocean? In general, the salinity (saltiness) of the ocean is 3.5 percent by volume. A gallon of seawater contains about a qu
What Is the Origin of Icebergs?
Most icebergs originate from the great continental ice sheets or ice shelves in polar regions like Antarctica and the Arctic (including Greenland, Alaska, and…