Is chex mix an example of a element or compound?

Chex mix is not an example of a element or compound.

Chex mix is an example of a mixture

l hope it helps

fire could start, buildings collapsing, and ash falling from the sky.

explanation:

this is because the buildings or plants could catch on fire and the buildings would most likely collapse. lastly ash would fall because all the burning would cause ash to fall from the sky.

hope this .

altitude, density, pressure

air gets less dense the higher the altitude and also the air pressure is less as altitude rises.