Which piece of evidence is not supported by a source? "These rising levels… could lead to a greenhouse effect, causing increased surface temperatures on the earth." "Carbon dioxide is released into the atmosphere when organic material decays, volcanoes erupt, and when fossil fuels are burned. " "If there were global warming occurring, temperatures should be rising in the troposphere." "… the troposphere's average temperature has not changed in 23 years."

Excerpt from an enemy of the people henrik ibsen mrs. stockmann. (turns to the hall door, listening.) i expect that is mr. hovstad coming. billing. very likely. (peter stockmann comes in. he wears an overcoat and his official hat, and carries a stick.) peter stockmann. good evening, katherine. mrs. stockmann (coming forward into the sitting-room). ah, good evening--is it you? how good of you to come up and see us! peter stockmann. i happened to be passing, and into the dining-room). but you have company with you, i see. mrs. stockmann (a little embarrassed). oh, no--it was quite by chance he came in. (hurriedly.) won't you come in and have something, too? peter stockmann. i! no, you. good gracious--hot meat at night! not with my digestion, when peter stockmann enters, what does his physical appearance to reveal about his character?