Question: For each of the following two arguments, construct an indirect proof of validity. If precipitation levels remain unchanged and global warming intensifies, ocean levels will

For each of the following two arguments, construct an indirect proof of validity.

If precipitation levels remain unchanged and global warming intensifies, ocean levels will rise and some ocean ports will be inundated. But ocean ports will not be inundated if global warming intensifies. Therefore either precipitation levels will not remain unchanged or global warming will not intensify. (L, G, O, P)

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