Earlier quoted context omitted.
Yes, but the temperature rose to those levels over millenia, not just hundreds of years. Ultimately, life on Earth will adapt - it's just that we might not survive long enough to witness the adaptation.
I'm curious how you picture the scenarios in which humanity doesn’t survive even +10F average over the next 200 years? Let’s also say a population of several billion. I see the sentiment often, even in journalism, and I don’t see a realistic path even absent the inevitable new technology.
I'm just thinking that if the oxygen levels drop a few percent that won't kill us, but it will start affecting our cognitive levels - so I'm imagining that those who can afford it will just carry portable oxygen bottles with them. Offices/homes will be equipped with oxygen disperses through the ventilation systems, just so we can feel "normal". I imagine that would cause massive unrest with people who cannot afford this.
But hey, this is just speculation. Maybe we will find a technological solution long before this happens.