The fourth state of matter, plasma, exists when what happens? a) the atoms in a gas become ionized. b) the atoms in a gas undergo nuclear fission. c) the atoms in a gas lose all intermolecular attraction for one another. d) when electromagnetic forces causes the atoms to stop colliding with one another.

he movement of air through earth's or any planet's atmosphere is called wind, and the main cause of earth's winds is uneven heating by the sun. this uneven heating causes changes of atmospheric pressure, and winds blow from regions with high pressure to those with low pressure.

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