One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
Your brain is 80% water.
525
Sound travels about 4 times faster in water than in air.
408
Iron weighs more after it rusts.
16
For every gallon of sea water, you get more than a quarter pound of salt.
45
One ragweed plant can release as many as one billion grains of pollen!
51
Most dust particles in your house come from dead skin.
48
A ball of glass will bounce higher than a ball made of rubber.
73