Antibiotic resistance occurs when bacteria change in some way that reduces or eliminates the effectiveness of drugs, chemicals, or other agents designed to cure or prevent infections. The bacteria survive and continue to multiply causing more harm. Bacteria can do this through several mechanisms. (By google)
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At Bluefish Caves, archaeologists discovered 15 ancient animal bones bearing cut marks or other modifications made by humans. One of these bones, a 24,000-year-old horse jawbone, has cut marks where human hunters removed the tongue to eat.
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