If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
One barrel of petroleum holds 42 gallons.
20
Pure water (H2O) does not conduct electricity on its own.
46
The bark of an older redwood tree is fireproof.
65
Most dust particles in your house come from dead skin.
48
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
One 75-watt bulb gives more light than three 25-watt bulbs.
57