A cubic yard of air weighs about 2 pounds at sea level.
31
One ragweed plant can release as many as one billion grains of pollen!
51
Balsa wood is classified as a hard wood!
41
The force of a suction cup is calculated using F=AP.
15
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
Each day, up to 150 species of life become extinct.
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