system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does radiation destroy human dna and make human life impossible but yet trees can survive and flourish?

For instance in Pripyat, there are many trees growing.
gpt
The destruction of tree DNA isn't nearly as devastating to a tree as it is a human. The main danger of radiation is cancer. Don't get me wrong, trees do get cancer, but because they are much slower growing cancer doesn't affect them in nearly the same way. Trees also don't have a blood stream so cancer in a tree isn't able to metastasize and move to other parts of the tree. (If you have ever seen those knobs on trees that look like bulges, that's tree cancer).   

**TL;DR:** because of the way cancer works and kills, it doesn't harm trees in the same ways it does humans, meaning it has little impact on them.