Answer: The greenhouse effect is an ecosystem service which warms the Earth to temperatures which support life.
Explanation: The greenhouse effect involves water, carbon dioxide, methane, and ozone, which absorb heat that would otherwise be radiated out into space.
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<span>a location's height above sea level.</span>
Answer: D. The resolute desk has a fascinating history
Explanation:
This double pedestal partners' desk, usually called the "Resolute desk", was made from the oak timbers of the British ship H.M.S. Resolute as a gift to President Rutherford B. Hayes from Queen Victoria in 1880.
This desk remained, however, on the Second Floor of the Residence in the President's Study.
