[amp_mcq option1=”GHGs” option2=”CFCs” option3=”CH4″ option4=”NO2″ correct=”option1″]<\/p>\n
The correct answer is A. GHGs.<\/p>\n
GHGs, or greenhouse gases, are gases that trap heat in the atmosphere. This trapped heat causes the Earth’s temperature to rise. The main GHGs are carbon dioxide, methane, nitrous oxide, and ozone.<\/p>\n
CFCs, or chlorofluorocarbons, are chemicals that were once used in refrigerators and air conditioners. CFCs are very effective at trapping heat in the atmosphere, and they are a major cause of ozone depletion.<\/p>\n
CH4, or methane, is a gas that is released from natural sources, such as wetlands, and from human activities, such as agriculture and waste management. Methane is a more potent greenhouse gas than carbon dioxide.<\/p>\n
NO2, or nitrogen dioxide, is a gas that is released from fossil fuel combustion and from industrial processes. NO2 is a major contributor to acid rain.<\/p>\n
All of these gases contribute to global warming, but GHGs are the main cause.<\/p>\n","protected":false},"excerpt":{"rendered":"
[amp_mcq option1=”GHGs” option2=”CFCs” option3=”CH4″ option4=”NO2″ correct=”option1″]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[34],"tags":[],"class_list":["post-51746","post","type-post","status-publish","format-standard","hentry","category-environmental-science","no-featured-image-padding"],"yoast_head":"\n