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Did you know?
Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
Did you know?
The average adult has about 21 square feet of skin.
Did you know?
Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.
Did you know?
If you could remove all of your skin, it would weigh up to 5 pounds.
Did you know?
In 1844, Charles Goodyear obtained the first patent for a rubber condom.