biodegradable
biography
bibliophile
Philadelphia
philanthropist
biology
photosynthesis
photography
philosophy
photon
a science that deals with things that are alive such a plants and animals; the study of life
a US city founded by William Penn, a Quaker who believed in peace
a wealthy person who gives money and time to help make life better for other people
capable of being slowly destroyed or broken down into very small parts by natural processes, bacteria, etc.
a lover or collector of books
the art, process, or job of taking pictures with a camera; named after the original process which used light to expose an image on special paper
the study of ideas about knowledge, truth, the nature and meaning of life; your personal beliefs or opinions related to life
the story of a real person's life written by someone other than that person
a tiny particle of light or electromagnetic radiation
the process by which a green plant turns water and carbon dioxide into food when the plant is exposed to light
