Thyroid conditions may make getting pregnant impossible.
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The average adult has about 21 square feet of skin.
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Cyanide works by making the human body unable to use oxygen.
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Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.
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Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.
Diagrams showing the multiple energy shells and orbitals of a nitrogen atom
Synthesis and major functions of the chief steroid hormones in animals.