Answer:
-Commercial jet aircraft fly in the lower stratosphere to avoid the turbulence which is common in the troposphere below. The stratosphere is very dry; air there contains little water vapor. Because of this, few clouds are found in this layer; almost all clouds occur in the lower, more humid troposphere.
Coal, oil, natural gas, minerals
<span>Mount Arant Chains cuts off Turkey and Iran from the rest of the Region. </span>
The firing on Fort Sumter on April 12, 1861, was the first armed conflict of the <u>Civil War.</u>