0 votes
29 views
asked in TD by (215k points)
Global warming is caused by                                                                                                          

      (a) ozone                                                            (b) carbon dioxide

      (c) nitrogen                                                         (d) carbon monoxide

Please log in or register to answer this question.

Related questions

Welcome to Q&A discussion forum, where you can ask questions and receive answers from other members of the community.

10.4k questions

274 answers

26 comments

15.3k users

...