They use a hygrometer. It measures relative humidity (the amount of moisture in the air) A psychrometer is an example of a hydrometer
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Nonrenewable energy resources, like coal, nuclear, oil, and natural gas, are available in limited supplies. This is usually due to the long time it takes for them to be replenished. Renewable resources are replenished naturally and over relatively short periods of time.
Based on the CDC Article There were about 300 species of birds infected by the west Nile virus in Florida. good luck:)
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They wait for the milk to spoil than they flavor it and make it more creamy or chunky it depends on the item