For example, Dr. James J. MacKenzie, Senior Associate of the "World Resources Institute," Climate, Energy, Pollution Program estimated th at each coal-based water heater produced over 5.8 tons of carbon dioxide, 91 pounds of sulfur dioxide and 850 pounds of nitrous oxides in a year.
(Dr. James J. MacKenzie; estimated th; at each coal-based water heater) (Dr. James J. MacKenzie; [is] Senior Associate of; the " World Resources Institute)
Dr. James J. MacKenzie Dr. James J. MacKenzie
estimated th [is] Senior Associate of
at each coal-based water heater
the " World Resources Institute