it's the uneven heating of the region's of the troposphere by the sun the sun warms the air at the equator more than the air at the poles. it causes conventioncurrents large scale patterns of windsthat move heat and moisture around the globe. as air rises expands and cools water vapor condenses and clouds develop.
A. because there both high pitched voice and low pitched ( girls have sweet, shrill ,high pitched good voice ) where as boys have horase ,low pitched medium voice )
