if humans were wiped out and allowed room for a new dominant species, out of all animals listed which one would have the most potential to do so?

the raven

Explanation:

octopus - intelligent but very antisocial with a short life span, meaning they most likely will not work with other octopuses to improve while also living in the ocean making it harder to build. (but could probably evolve to walk on land)

dolphin - smart but does not have thumbs to make tools and lives in the ocean meaning they have a disadvantage.

raven - intelligent, works with other ravens and sometimes even wolves, and has shown to make tools.

The raven because it's ability to craft tools, social life involving hunting groups, intelligence, and wide variety of sounds (allowing potential language) give it the potential to evolve very well.  

Explanation:

answer: ice crystals in air

the water from the water body or another source of water gets evaporated as water vapor as an effect of heat on water. these water vapor rises in the upper layers of the earth atmosphere under high atmospheric pressure. the atmospheric pressure of these water molecules starts to decrease due to the effect of cold air. the invisible water vapor condenses into visible water droplets and ice crystals.these ice crystals and water droplets being less denser than the surrounding air floats on air as clouds.