Microbiology: A Human Perspective 7th Edition by Eugene Nester,Martha Nester,Denise Anderson, Evans Roberts

تمرين 2

Paper recycling companies refuse to collect paper products that are contaminated with food or have been sitting wet for a day. A col­lege sorority member who is running a recycling program on campus wishes to know the reason for this. What reason did the chemist who works for the recycling company probably give her for this policy?