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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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As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.
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The human body produces and destroys 15 million blood cells every second.
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There are more bacteria in your mouth than there are people in the world.
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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
![Acromegaly. Acromegaly is a metabolic disorder in which excessive amounts of growth hormone are secr](https://biology-forums.com/gallery/47/medium_14755_14_10_12_6_35_05_93811190.jpeg)
![The basalt below the hominins is dated to 1.8 million years ago, and the geomagnetic polarity of the](https://biology-forums.com/gallery/47/medium_274477_04_02_15_12_26_15_20589385.jpeg)