It's unequivocally clear, overpopulation is the major cause of GW and climate change, how true is this?

To put it simply: Overpopulation exacerbates the problem, while it in itself is the main cause of habitat destruction, resource depletion, starvation (in some places. In others, the rich take away from the poor), species extinctions, and it also exacerbates the pollution problem. All in all, overpopulation is the biggest thing we have to tackle these days, and unfortunately, like Global Warming, Overpopulation has many deniers...