4. Mud houses with thatched roofs are cool in summer.
5. Mercury is used in thermometers.
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4. Mud and thatched roofs are poor conductor of heat so they are cool in summer
. 5. Mercury is used in thermometer because it expands as the temperature rises.
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4.Mud and thatched roofs are poor conductor of heat so they are cool in summer.
5. Mercury is used in thermometer because it expands as the temperature rises.
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