what are three main advantages of studying objects at different wavelengths of radiation?
part 2 is the green house effect operating in earth's atmosphere or harmful? give examples. what are the consequences of an enhanced greenhouse effect?

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explanation:

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.