The world if Africa didn't exist
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would be greener on the continents with ice reaching further down because without africa there would be no humans and with no humans there would be no greenhouse emissions and global temperatures would be notably cooler.
You are looking at the wrong continent to disappear for the effect to be noticeable
https://www.statista.com/statistics/205966/world-carbon-dioxide-emissions-by-region/
I think the point was that humans come from Africa (as in, as a species).
Oh then yes I agree lol