Why Is It so Easy to Tear a Newspaper Vertically but Not Horizontally?
Why Is It so Easy to Tear a Newspaper Vertically but Not Horizontally? The principal raw material required for the manufacture of paper is cellulose pulp. It is...
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How Did Driving on the Right Originate in America?
How Did Driving on the Right Originate in America? The drivers of early freight wagons started the American custom of driving on the right side of the road. Americans...
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When Can a Rainbow Be Seen?
When Can a Rainbow Be Seen? After a shower of rain there is often a rainbow. Rainbows form when the sun begins to shine through the clouds while the air is still filled...
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Why Does a Compass Point North?
Why Does a Compass Point North? There are two important things that make compass needles point the way that they do. The first is the needle and the second is the...
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How Far Can an Owl Turn Its Head?
How Far Can an Owl Turn Its Head? If you have ever walked around a perched owl, you may have been amused at the way it seemed in danger of twisting its head off as it...
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