What would happn if more heat became trapped in earth's atmosphere?

The global temperatures would eventually become too high for living things to survive. Basically, if more heat became trapped in earth 's atmosphere, we would all die.

If even more heat becomes trapped, then it will cause further global warming, climate change. Through this, huge amounts of ice and snow will melt from the north and south pole causing higher sea levels, flooding. It would also cause animals to become extinct, that possibly including humans too.