system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How does freezing a wart with liquid nitrogen kill it?
gpt
Cells are like bags of water. The wart is like a bunch of those bags filled with dirty water. Freezing it turns the water to ice and pops the bag (since ice is bigger than water). Then your body makes some new bags to replace the damaged area.