Across
- 2. A US city founded by William Penn
- 5. a person who loves or collects books
- 6. the study of ideas about knowledge, truth, and the nature of life; personal beliefs related to life
- 8. the process by which a green plant turns water and carbon dioxide into food when the plant is exposed to light
- 9. the art, process, or job of taking pictures with a camera
- 10. the story of a real person's life written by someone else
Down
- 1. capable of being slowly destroyed and broken down into very small parts by natural processes
- 3. a wealthy person who gives money and time to make life better for other people
- 4. science that deals with living things; the study of life
- 7. a tiny particle of light or electromagnetic radiation