How do air masses interact to form a cyclone?

a. the coriolis effect bends global convection cells into a funnel pattern.
b. air moves in a spiraling pattern from centers of high pressure toward centers of low pressure.
c. cold, dense air flows toward the warmer, less dense air, so the cold front ends up moving faster than the warm front.
d. two air masses meet, but neither moves into the other one.

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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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