Your answer is B. Good luck with the rest of your homework!
Answer:
Immunity to Small Pox
Explanation:
Over the years, Europeans had built up an immunity to smallpox because many had contracted the disease and still survived. As the population grew children were born with some immunity to the disease. When the Europeans arrived in the Americas, and smallpox spread around the native peoples, the Europeans did not contract the disease because they were immune. However, since the natives were not immune, they slowly died of due just to the disease as well as some parts of the war between the europeans.
A) Vibrations
Sounds vibrate the eardrum
Umm...
biology is the study of life
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Reparation of consumers. For example when humans exhale they send carbon dioxide back into the atmosphere.
