Assertion: lapse rate | /r/CapableOf | equal 9.8 °c per kilometre
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Source sentences:
text: The dry adiabatic lapse rate for the Earth’s atmosphere equals 9.8 °C per kilometre (28.3 °F per mile); thus, the temperature of an air parcel that ascends or descends 5 km (3 miles) would fall or rise 49 °C (85 °F), respectively.