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Which sentence describes an example of a positive feedback loop?A. Warm-blooded animals sweat when they get too hot. Sweating is a method by which the body cools itself.B. A thermostat regulates temperature by turning a furnace or air conditioner on and off.C. When blood flows from a mild cut, blood clots form to prevent excessive bleeding.D. As oceans get hotter, they release more CO2, which then increases atmospheric and ocean temperatures. |
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