What would be the effect on the climate if there were more greenhouse gases in the atmosphere?

If there were more greenhouse gases in the atmosphere, the Earth's temperature would likely increase due to enhanced greenhouse effect, leading to more heat being trapped. This warming could result in more extreme weather events, rising sea levels, and disruptions to ecosystems. Additionally, it could exacerbate climate change impacts such as droughts, floods, and shifts in agricultural productivity, posing significant risks to natural and human systems.