In which year were the populations of light and dark colored moths the most different?

1900

Explanation:

I’m not sure but in 1900 98% of the moths were dark

the energy to form plasma comes from heat or electricity in the atmosphere!

sunny~ ☺

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

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~ trueboss72