Nicolette on September 25, 2014
I do not understand why mentioning methane in the argument leads to it be a considerable part of the correct answer.
It is compared to carbon dioxide because it is a greenhouse gas. It is not necessarily included with carbon dioxide as part of the necessary components of trapping heat within the atmosphere in the argument, or at least this is not made clear.
Mehran on September 26, 2014
Meredith on September 22, 2019