Which of the following is a direct result of global warming that is causing endangerment of polar bears? increased drought causing wildfires increased risk of tidal waves on land increased hurricanes causing flooding increased warmth causing glaciers to melt

increased warmth causing glaciers to melt

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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.

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