contestada

A(n) __________ is a large parcel of the atmosphere, sometimes subcontinental in size, that may move over earth's surface as a distinct, relatively homogenous entity.

Respuesta :

The answer is:  "air mass" .
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        "An    air mass    is a large parcel of the atmosphere, sometimes subcontinental in size, that may move over earth's surface as a distinct, relatively homogenous entity."
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