60 million years is the answer.
Answer:
answer is loss of habitat
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Embryonic stem cells. These stem cells come from embryos that are three to five days old. At this stage, an embryo is called a blastocyst and has about 150 cells. These are pluripotent (ploo-RIP-uh-tunt) stem cells, meaning they can divide into more stem cells or can become any type of cell in the body.
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Urinary
retention - the inability to urinate - is a common post-operative
complication, and can have serious ramifications for patients. Most
specifically, this condition, if allowed to persist, can cause damage to the
bladder, as urine builds up in the organ to dangerously high levels. Retained
urine can also lead to infections, which can cause systemic issues in
patients.
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