What Is Sea Level?
We say that Mount McKinley in Alaska is 20,320 feet above sea level, or that Death Valley, in California, is 282 feet below sea level. And w
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What Makes the Wind Blow?
What Makes the Wind Blow? Wind is air in motion. Wind is caused mainly by the uneven heating of the air around the earth by the sun. Since t
What Is Local Mean Sea Level?
What Is Local Mean Sea Level? Sea level is the base level for measuring elevation and depth on Earth. Because the ocean is one continuous bo
When Did Fairs Begin?
When Did Fairs Begin? Fairs grew out of early religious festivals, when people gathered together to celebrate, and merchants would bring the