Answer:
diabetes occurs when your immune system, the body's system for fighting infection, attacks and destroys the insulin-producing beta cells of the pancreas. Scientists think diabetes is caused by genes and environmental factors, such as viruses, that might trigger the disease.
Explanation:
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To prwvent injury
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Answer:
when someone speaks in concrete language, the listener does not have to guess at what the speaker really means.
Answer: Puberty
Explanation: 13 is an age when most boys have at least started puberty, and my brother got a little bigger from puberty because he had to eat more to feed his growth spurts.