Is it possible to poison a oak tree?

Question

How can I do this?

Answer 1

Yes all you have to do is go to a library or go to your local university and ask them to find you something about mold. I forgot the kind of mold it is but I did it to my oak and it died.

Answer 2

Hammer in a piece of copper pipe(like a nail) into the trunk.    Copper will kill the treee.