Environmental Science
In most areas, the warmest time of the day about 5 feet above the ground occurs:

In the early evening after 6 PM
Just before the sun sets
In the afternoon between 3 and 5 PM
Around noon

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Environmental Science
Biogas is composed of

carbon dioxide, nitrogen and hydrogen
methane, carbon dioxide, nitrogen and sulphur
ethane, carbon dioxide, nitrogen and hydrogen
methane, carbon dioxide, nitrogen and hydrogen

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