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.
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There are 60,000 miles of blood vessels in every adult human.
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There are more nerve cells in one human brain than there are stars in the Milky Way.
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Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.
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Individuals are never “cured” of addictions. Instead, they learn how to manage their disease to lead healthy, balanced lives.
Say the colour, not the word
The “Old Man” of Cro-Magnon, from the Dordogne region of France.
Object and Word Recognition After Midsegments of Lines Have Been Eliminated
How to solve word problems with two unknowns (Question 4)