It's a difficult question, not because of racism but because things aren't always black and white (no pun intended).
Practically, if we're not prepared, taking in 200 million refugees could be a disaster. It would affect everything, from housing, to food, to the economy, to healthcare... Just take what happened with Syria, how many countries were unprepared to take in that amount? Imagine that but with a LOT more people.
On an ethical level though, of course it would be horrible to turn a blind eye to others. We screwed them over in so many ways, including with climate change. We're responsible for most of it.
Ideally, I feel we should do all we can to reduce climate change, help those countries get clean energy too (plus a lot of these places have abundant sunlight), implement things like desalination and alternative farming methods that rely less on lots of resources such as vertical farming... And also prepare for some refugees, because although I do think we *can* curb a huge increase in temperature, I'm not convinced we're doing enough. It's sad because I care deeply and do quite a bit to try to push the government to do more, but often it's dismissed. You have no idea how many times I emailed my MP just to get a dismissive answer back. I never voted for him and wish he could get out, since he clearly care about nothing or ignores science.
There's some real repercussions which often are overlooked because people are afraid to be branded as "racist". This is a tough question, simple answers don't cut it.
