Most of mid-latitude weather is generated from an unstable zone between Ferrel and polar cells.

Question

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The polar air does not mix well with the Farrel cells. The polar cell's air is more dense than the Ferrel cell's air. The unstable zone creates the weather conditions found in the mid-latitudes. Information can be found in the section The Atmosphere Moves in Response to Uneven Solar Heating and Earth's Rotation.

Most of Mid-Latitude Weather Is Generated from an Unstable Zone