Answer
It is biased.
Work Step by Step
It is assumed that global warming is a problem. Since it is a question that carries an assumption, it is biased because it does not have any facts and it can't be proved.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.