“Most climate scientists agree the main cause of the current global warming trend is human expansion of the greenhouse effect,” which is the, “warming that results when the atmosphere traps heat radiating from Earth toward space.”(“Global Climate Change”) Many gases we are releasing into the atmosphere such as water vapor, carbon dioxide, methane, nitrous oxide, and chlorofluorocarbons are all known as greenhouse gases, …show more content…
“The Earth 's climate has changed throughout history. Just in the last 650,000 years there have been seven cycles of glacial advance and retreat, with the abrupt end of the last ice age about 7,000 years ago marking the beginning of the modern climate era — and of human civilization.”(“Global Climate Change”) However, “the current warming trend is of particular significance because most of it is very likely human-induced and proceeding at a rate that is unprecedented in the past 1,300 years.” (“Global Climate