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When air is unstable,the environmental lapse rate is ________.
Q10: The _ means "the Sun in the
Q40: List three mechanisms of heat transfer.
Q44: The Sun produces energy by converting _
Q47: Earth is closest to the Sun in
Q53: For more than 70 years, the best-known
Q60: When an active cold front overtakes a
Q70: An extreme example of the greenhouse effect
Q71: "Perhaps more than any other single measurement,
Q76: The annual mean temperature is an average
Q97: The fault-block mountains of Nevada and Mexico