Which will most likely result if the levels of dissolved oxygen decrease in a body of water? A Native plant and fish species will grow and thrive in the area. B Native fish species will begin to decrease in population size. The water temperature will begin to decrease. The water level in the area will begin to rise.​

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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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