Classify each of the following activities as unit level, batch level, product level, or facility level to indicate how each is incurred with respect to production. 1. Paying real estate taxes on the factory building 2. Attaching labels to collars of shirts 3. Redesigning a bicycle seat 4. Cleaning the Assembly department 5. Polishing gold wedding rings 6. Mxxing bread dough in a commercial bakery 7. Sampling cookies to determine quality 8. Recycling hazardous waste 9. Reducing greenhouse gas emissions