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Which of these gases in the atmosphere is not a greenhouse gas?
Earth's average surface temperature today is about 15 °C. Without the natural greenhouse effect, it would be about
Which list gives the planets in the correct order of increasing distance from the Sun?
So far, Earth is the only planet in our Solar System known to support life.
Earth's average surface temperature is about 15 °C. Without greenhouse gases it would be about −18 °C. By how many degrees Celsius does the greenhouse effect warm Earth?
Earth is about 150 million km from the Sun. Mars is about 1.52 times as far from the Sun as Earth. How far is Mars from the Sun (in million km)?
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