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Did you know?
Everyone has one nostril that is larger than the other.
Did you know?
It is difficult to obtain enough calcium without consuming milk or other dairy foods.
Did you know?
About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.
Did you know?
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
Did you know?
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.