Across
- 4. a person who loves or collects books
- 5. capable of being slowly destroyed and broken down
- 6. the story of a person's life written by someone else
- 7. the process in which a plant turns water and carbon dioxide into food when the plant is exposed to light
Down
- 1. a US city founded by William Penn
- 2. a tiny particle of light or electromagnetic radiation
- 3. a wealthy person who gives money and time to help make life better
- 5. a science that deals with things that are alive