Which of the following would be regarded as compounds? Biology Which of the following would be regarded as compounds? A) H2O, O2, and CH4 B) H2O and O2 C) O2 and CH4 D) CH4 and O2, but not H2O E) H2O and CH4, but not O2 Answer: E Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+