Which compounds have carbon-carbon double bonds?

Aikens/hydrocarbons

Explanation:

because the formula of this is Cn H²n

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 .

i think so it’s will be b yes i believe its