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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There are 20 feet of blood vessels in each square inch of human skin.
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The longest a person has survived after a heart transplant is 24 years.
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It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.
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Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).
Fetal development of human
Human Emotions and Dogs
The Human Eye and its Structures
Human civilization developed during the most recent interglacial stage