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1. Green kryptonite radiation weakens Superman, and can even kill him in seconds or

days depending on the amount he's exposed to, and how close it is to him.

2. Superman, like all beings, is vulnerable to magic. It can affect him in many ways and

even kill him.

3. Superman's body is like a solar battery. He'll weaken, albeit very slowly, if he's

deprived of sunlight for long periods. While this deprivation wouldn't kill him, it could

weaken him to the point where he could be killed by attacks that would never harm

him when he's at full strength. It could take days of total sunlight deprivation before

he loses all his power. In that case, re-exposure to sunlight would quickly return his

powers. Superman loses his powers when exposed to rays of a red sun.

4. Red Kryptonite has a different effect on him each time so itcould eventually kill him.

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14y ago

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