Saved Bookmarks
| 1. |
Greenhouse gases that occur both naturally and from human activities include water vapor, carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O) and ozone (O3). |
|
Answer» eenhouse gases occur naturally in the atmosphere, such as carbon DIOXIDE, METHANE, WATER vapor, and nitrous oxide, while others are synthetic. Those that are man-made include the chlorofluorocarbons (CFCs), HYDROFLUOROCARBONS (HFCs) and PERFLUOROCARBONS (PFCs), as well as sulfur hexafluoride (SF6). |
|