pile up – v. to increase in amount or number to a total that is difficult to manage

tower – n. the plastic container that holds the electronic elements of a computer and often sits on the floor

disposed – adj. describing something that has been thrown in the garbage

origami – n. the Japanese art of folding paper into shapes that look like birds, animals and other things

wallet – n. a small folding case that holds paper money and credit cards

single-stream recycling – adj. a system of recycling in which paper, plastic, metal and other materials are all mixed in a collection truck

straw – n. a thin tube used for sucking up a drink