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1) the temperature very high in the Earth's atmosphere can be 700 C. Yet an animal there would freeze to death rather than roast. Explain.
2) Why is it important, when hot-air furances are used to heat a house, that there be a vent for air to return to the furnace? What happens if this vent is blocked by a bookcase?
2) Why is it important, when hot-air furances are used to heat a house, that there be a vent for air to return to the furnace? What happens if this vent is blocked by a bookcase?