air challenge 2

Convection process diagram. Warm air rises and cool air sinks. Hot and cooler air masses.Cloud

U.N. Rules Ireland’s Abortion Ban ‘Cruel and Inhuman’ air challenge 2 Death of 17-Year-Old Highlights Struggle to End Female Genital Mutilation in Egypt air challenge 2 IMF: 'Brexit' Would Mean Years of Uncertainty air challenge 2 At Least 56 Syrian Civilians Killed by Suspected U.S. Coalition Airstrikes air challenge 2

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