Just as everyone says, humans are a major cause of climate change today. Our earth, although the independent and strong, can't maintain itself mostly because of human exponential population growth and excessive resource consumption. Last year in my AP Environmental Science class, I learned the consequences of deforestization, the burning of fossil fuels, and even how some dairy farms can contribute to greenhouse gas emissions which leads to climate change.(because in some dairy farms, massive amounts of cattle are concentrated in a specific area releasing excessive amounts of methane gas into the atmosphere). What I am really trying to say is that "yes", humans are one of the main reasons for climate change and that we as a human race, need to live a more moderate lifestyle so earth has time to recover from the damage that was already done.

I agree with you that humans are responsible for climate change. The reason the climate changes is because of global worming. Global warming is being created because the green house effect that our planet has. Certain gases in the atmosphere block heat from escaping. Long-lived gases that remain semi-permanently in the atmosphere and do not respond physically or chemically to changes in temperature are described as "forcing" climate change. Gases, such as water vapor, which respond physically or chemically to changes in temperature are seen as "feed backs." Some of the gases that contribute to the green house effect is CO2, Methane, Nitrous oxide, and Chlorofluorocarbons (CFCs). All of these four elements are released into the air because of a human cause.

   CO2 is  separated from air naturally from humans, but because of our factories, we put tons of carbon into the air every hour. Humans have increased atmospheric CO2 concentration by a third since the Industrial Revolution began. Trees and plants turn CO2 back into oxygen, but we cut down hundreds of trees each day , and the plants can't keep up with society. Methane is a hydrocarbon gas produced both through natural sources and human activities, including the decomposition of wastes in landfills, agriculture, and especially rice cultivation, as well as ruminant digestion and manure management associated with domestic livestock. On a molecule-for-molecule basis, methane is a far more active greenhouse gas than carbon dioxide, but also one which is much less abundant in the atmosphere. Nitrous oxide is a powerful greenhouse gas produced by soil cultivation practices, especially the use of commercial and organic fertilizers, fossil fuel combustion, nitric acid production, and biomass burning. CFCs is a synthetic compounds of entirely of industrial origin used in a number of applications, but now largely regulated in production and release to the atmosphere by international agreement for their ability to contribute to destruction of the ozone layer. They are also greenhouse gases.