Perhaps the phrasing of the ascent question could be changed? Because ascent by itself doesn't mean that it had to be successful or completed all the way.
Super easy quiz. Only the world population question had me thinking for a moment. Got it right in the end, but it was more like a hunch than an educated guess.
If you get an answer wrong, the incorrect answer gets a line through it, and shows in red, the correct answer is grey and shows a tick (V).