Biology, 13.10.2020 14:01, ash848

Which is the best explanation for a convection current in the atmosphere? Hot air expands and rises to the top of the atmosphere, while the cool air stays
Hot air expands and rides becoming cooler and denser, then falling again in a
Cold air expands and rises, becoming warmer and contracting, then falling again
in a continuous cycle.
Cold light air rises in the atmosphere, while the warmer air stays near the
ground

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Which is the best explanation for a convection current in the atmosphere? Hot air expands and rises...