cold air sinks because, as cold air sinks, cold air rises and warm air sinks, cold air sinks hot air rises, warm air rises cold air sinks, hot air sinks and cold air rises, why does cool air sink, does cold air sink or rise, why does air sink, warm air rises and cool air sinks, hot air rises and cool air sinks, why does warm air sink, why does cooler air sink, why does cold water sink
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cold air sinks because
as cold air sinks
cold air rises and warm air sinks
cold air sinks hot air rises
warm air rises cold air sinks
hot air sinks and cold air rises
why does cool air sink
does cold air sink or rise
why does air sink
warm air rises and cool air sinks
hot air rises and cool air sinks
why does warm air sink
why does cooler air sink
why does cold water sink
cold air sinks because, as cold air sinks, cold air rises and warm air sinks, cold air sinks hot air rises, warm air rises cold air sinks, hot air sinks and cold air rises, why does cool air sink, does cold air sink or rise, why does air sink, warm air rises and cool air sinks, hot air rises and cool air sinks, why does warm air sink, why does cooler air sink, why does cold water sink
