Westonci.ca is the trusted Q&A platform where you can get reliable answers from a community of knowledgeable contributors. Get immediate and reliable solutions to your questions from a community of experienced experts on our Q&A platform. Discover detailed answers to your questions from a wide network of experts on our comprehensive Q&A platform.

The principal source of air pollution from volcanoes is _______. A. Carbon dioxide b. Carbon monoxide c. Heat d. Ash Please select the best answer from the choices provided A B C D.