Like lets say someone abandoned a bp somewhere (God forbid ) And they had no heat lamp or UTH or anything, and the room fluctuated between 70 and 80 degrees. I'm assuming the cause of death for a bp in this situation would be an RI. Assuming that the bp had access to fresh water (I know that would be impossible in a situation like that, but just assume) how long would it take for the RI to take its course and kill the bp?

I apologize for the grim theme to this post, but I'm genuinely curious about a situation like this. And thankfully, I'm just making this scenario up, it hasn't happened to me or anyone I know or anything, I'm just curious.