The bark of an older redwood tree is fireproof.
65
A ball of glass will bounce higher than a ball made of rubber.
73
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
Indoor pollution is 10 times more toxic than outdoor pollution.
62
Pumice is the only rock that floats on water.
14
Each day, up to 150 species of life become extinct.
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