Does this question imply that the person asking it has a particular opinion?
If so, it is biased, as survey takers often show a desire to please.
It seems as though this question is implying that the responded already agrees that slowing global warming is important.
Yes, this is a biased question.
This question assumes that the respondent will think that one of the given factors is important and that it is important to slow global warming.
Does this question seem to invite the response that teacher salaries should not be raised?