How do middle-latitude cyclones affect weather across the united states

Mid-latitude cyclones form just as other low pressure systems do with the divergence of air high in the atmosphere. The jet stream plays a major role in the location of mid-latitude cyclones. ... A front separates these two air masses. The low pressure system forms to the east of the upper-level trough of the jet stream
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Answer a mineral that contains a combination of silicon, si, and oxygen, o, is a silicate mineral. hope it ^.^