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Why does the temperature of a substance stay constant during a phase change such as vaporization?
Leptin
A hormone, secreted by fat cells, that is associated with decreasing eating behavior based on long-term body fat regulation.
Ghrelin
A hormone, secreted by an empty stomach, that is associated with increasing eating behavior based on short-term signals in the bloodstream.
Glucose
A simple sugar that is an important energy source in living organisms and is a component of many carbohydrates.
Insulin
A hormone, secreted by the pancreas, that controls glucose levels in the blood.
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