Which of the following is not true about conditions leading to the Antarctic ozone hole? O The air pressure drops significantly over Antarctica when the temperature drops in winter, and this combined with the rotation of the Earth leads to formation of a vortex in the stratosphere. O Polar stratospheric clouds (PSCS) exist over the South Pole year-round. O Ozone depletion does not begin until early spring, because light is necessary to photodecompose Cl2 gas to catalytically active Cl atoms. O Reactions that lead to activation of catalytically-inactive forms of chlorine take place on the aqueous surface of PSC crystals. O Stratospheric ozone (measured in Dobson Units) is usually higher in polar regions than in the tropics.

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A:

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A:

Environmental Pollution

Environmental pollution occurs due to some unwanted alteration in the surroundings which results in unfavorable effects on all organisms of that surrounding.