[Atom_Bonded]

I set garbage bags in the garage a couple times and somehow they bonded to the concrete. Wondering what toxins were produced, how toxic they are, and generally an explanation chemically.

I am as sure as possible,  given it was years ago, the plastic and concrete bonded. There's still a mark. I can't imagine I had glue etc in the bag. Unless food or something caused this to happen?

New forum member, first post. Thanks in advance. Not sure about concrete but I'm pretty sure the bags are organic? Hopefully I posted in the right forum?