The eardrum is a thin flap of skin that is stretched tight like a drum and vibrates when sound hits it.
Answer: Your answer is indeed <u>A. Fair treatment.</u>
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The insulin receptors have specific shape that is compatible to the glucose molecules. The glucose molecules bind to these receptors, which tells the pancreas to release insulin in order to lower the blood glucose level. Any kind of change in the shape of these receptors because of mutation will hinder this cell communication and stop the insulin release. This will lead to high levels of blood sugar level.
Deforestation because without trees and plants, they are nothing to convert CO2 into Oxygen.