Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
One ragweed plant can release as many as one billion grains of pollen!
51
One cubic foot of gold weighs more than 1,200 pounds!
78
One barrel of petroleum holds 42 gallons.
20
Sound travels fifteen times faster through steel than through air.
134
One 75-watt bulb gives more light than three 25-watt bulbs.
57
One third of the electricity produced on earth is used to power electric light bulbs!
75