After eating half of a banana as a snack, you decide to save the rest for later. There are two types of plastic wrap in your house, and you use one to cover the banana. In an hour, you return and find that your banana half has browned
significantly despite being saved in plastic wrap. You discover that one of the plastic wraps is made of polyvinyl,
and the
other is made of polyethylene.
Which plastic wrap could have caused this browning effect, and why?