Scientists believe that ancient ancestors of all animals were single celled eukaryotes that sometimes grew in colonies. The correct option among all the options that are given in the question is the second option or option "B".
The Cambrian Explosion resulted in the evolution of the first representatives of most animal phyla. The correct option among all the options that are given in the question is option "B".
<span>Electrons that are unpaired are involved in bonding or pairing with another atom. Valence electrons can be unpaired. Once the electrons are paired the atom is in a more stable state.
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Answer:
"You've messed up everything!"
Explanation:
I have actually no clue what you meant by this but that's a blaming message so yeah.
