One barrel of petroleum holds 42 gallons.
20
One ragweed plant can release as many as one billion grains of pollen!
51
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
For every gallon of sea water, you get more than a quarter pound of salt.
45
A cubic yard of air weighs about 2 pounds at sea level.
31
A ball of glass will bounce higher than a ball made of rubber.
73