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Did you know?
The average adult has about 21 square feet of skin.
Did you know?
Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.
Did you know?
There are approximately 3 million unintended pregnancies in the United States each year.
Did you know?
Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.
Did you know?
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

