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