https://www.ucsusa.org/global-warming/science-and-impacts/science/human-contribution-to-gw-faq.html https://www.ucsusa.org/global-warming/science-and-impacts/sc

https://www.ucsusa.org/global-warming/science-and-impacts/science/human-contribution-to-gw-faq.html https://www.ucsusa.org/global-warming/science-and-impacts/sc... Why haven’t you looked to scientists for the answer to your question? I found this in about 10 seconds using google.