http://www.google.com/#hl=en&sa=X&psj=1&ei=ipSUT7m6A4TGgAfS5KHmBA&ved=0CBsQBSgA&q=global+warming+due+to+methane+gases+from+landfills+and+animals&spell=1&bav=on.2,or.r_gc.r_pw.r_qf.,cf.osb&fp=98d5445c5607bd30
http://www.google.com/#hl=en&sclient=psy-ab&q=carbon+dioxide+from+cars+and+factories&oq=carbon+dioxide+from+cars+and+factories&aq=f&aqi=&aql=1&gs_nf=1&gs_l=serp.3...657926.659450.1.662570.2.2.0.0.0.0.108.184.1j1.2.0.cqn%2Ccconf%3D0-95%2Cmin_length%3D2.1.r3NZTnZl1KA&psj=1&bav=on.2,or.r_gc.r_pw.r_qf.,cf.osb&fp=98d5445c5607bd30
Effects of global warming due to methane gases from land fills and animals?
Effects of global warming due to carbon dioxide from cars and factories?
1 answer
1 answer