Using the deductive method of reductio ad absurdum (proof by contradiction) covered in the class discussion of Johnnie Cochran's "Bloody Glove Argument,\" in a step-by-step fashion, demonstrate the logical validity of the following two arguments. (25 points possible for prepping the argument into an abbreviated and diagrammatic form, thereby representing the argument's logical-skeletal (truth-functional) structure, and 25 points possible for the logical proof itself.) Don't forget to cite the names of the inference rules that are used in your proof, along with the steps to which those rules have been applied. Moreover, statement letters, such as A, B, C, etc., whatever you decide to use, should be used to stand for logically simple statements, not logically complex statements, such as those containing the logical construction expressions "not," "and," "or," and the like. Exercise #1: Either the present rate of fossil fuel combustion will decrease or a global greenhouse effect will occur. However, the present rate of fossil fuel combustion will not decrease. Furthermore, if a global greenhouse effect occurs, then, world temperatures will rise. Accordingly, world temperatures will rise