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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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Blood is approximately twice as thick as water because of the cells and other components found in it.
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Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.
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Medication errors are three times higher among children and infants than with adults.
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The horizontal fraction bar was introduced by the Arabs.
![(a) With few ticks, moose retain a brown coat; (b) at high numbers of ticks, moose self-groom, destr](https://biology-forums.com/gallery/47/medium_33_17_02_12_5_38_22_1977554.jpeg)
![On the slopes of Chimborazo, a 6,310 m high volcanic peak in the Andes Mountains of Ecuador, Alexand](https://biology-forums.com/gallery/47/medium_33_19_02_12_5_42_32_2066482.jpeg)