Comments: 1. This is a “yes or no” question and does not express its own opinion. Therefore, you should not answer with “I beg to differ,” which means that you disagree with the stated opinion. 2. “Unique” is used mainly as a comparison word. We use it to express it is unlike anything else. You have done a good job saying there are several culprits, one of which is cars, that cause air pollution. 3. A culprit (cars or industry) causes (verb) something (pollution) that results in a lower quality of life.