Cold air is more what than warm air?

Rosie-knees, more harder…I thought that the incorrect grammar was annoying.

"more heavier" ... really? Density, not weight, never mind the schoolboy grammar.

Player #97184361, No, I agree with Rosie-knees. The question is worded awkwardly.

Rosie-knees, This is an easy question and answer,so to add some suspense it’s worded such as to encourage specific thinking and fun.! ! !

The correct word is dense.

🤯mind blown

excellent explanation.