I think it’s nucleic acid
Answer:
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.
Evaporation and condensation can be used to purify water because it allows for the dirt and other chemicals that are harmful to be taken out of the water and leave behind a much cleaner and purified water, almost like filtering it naturally.
The first answer because it’s natural selection when the weak die off the the strong get stronger also the strong produces more which stops antibiotics form working which is why we have antibiotics consistently changing
