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