Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
The average home creates more pollution than does the average car.
33
Indoor pollution is 10 times more toxic than outdoor pollution.
62
Balsa wood is classified as a hard wood!
41
Pure water (H2O) does not conduct electricity on its own.
46
Pumice is the only rock that floats on water.
14
A 'jiffy' is an actual unit of time for 1/100th of a second!
66