It's mostly the trees that we cut down. They were already there. Part of the problem here is that biomass was declared to be 'carbon neutral', which caused a lot of people to interpret that as a license to cut down the forests and burn them. But carbon fixation is a slow process and growing trees to the point where they have a substantial gas exchange gowing takes a long time.

Bangladesh won't be around for that much longer. 75% of it is underwater due to flooding and that number will only increase: https://www.concernusa.org/story/bangladesh-underwater-human...

Bangladesh has been handling flooding covering > 50% of its land for as long as it’s existed. That’s the nature of being a country built on a river delta. That doesn’t mean the country is going to cease to exist. A third of the Netherlands is below sea level, but even 19th century technology is enough to keep the sea out.

Bangladesh could lose a third of its per capita GDP by 2060 due to climate change: https://www.tbsnews.net/economy/bangladesh-lose-3649-gdp-cap.... But that’s compared to a no climate change baseline. It will still be far richer than it is today. And it’s in no danger of ceasing to exist. That’s not a scientifically supportable claim.