Define relative humiidity
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Explanation:
Every homeowner should own a hygrometer that measures temperature and relative humidity (RH). The ideal relative humidity for health and comfort is about 40–50%. In the winter months, it may have to be lower than 40% RH to avoid condensation on the windows
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Answer:
the amount of water vapour present in air expressed as a percentage of the amount needed for saturation at the same temperature.
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