Well Done on making it through to the next round. Why do trees get sick?

Question: Well Done on making it through to the next round. Why do trees get sick?
- Keywords:
  sick,
  tree
Asked by ComputerConor676 to Reka on 17 Nov 2016.
- Reka Nagy answered on 17 Nov 2016:
  
  Thanks!
  Trees can get sick due to the same reasons humans can – they also have bacteria and viruses that can make them sick, and removing their bark will damage them, sometimes causing them to die as they can’t defend themselves and start to dry out.

Question: Well Done on making it through to the next round. Why do trees get sick?