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Actually Nuclear power currently draws heavily from coal powered electrical plants. There is an intense power need to start and continue the fission process, and coal power is the only one with sufficient umph to do it.
The Ozone hole grows and shrinks during the year. It depends on the seasonal temperatures. There has ALWAYS been an ozone hole/thin area that fluctuated, it was just that our chlorine emissions into the atmospere were making it ridiculously larger.
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