a person who loves or collects books

a wealthy person who gives money and time to help make life better for other people

the study of wisdom, knowledge, and the nature of reality

a story about a person's life written by another person

capable of being slowly destroyed and broken down into very small parts by natural process

the process by which plants use the sun's energy to convert water and carbon dioxide into sugars

a US city founded by William Penn, a Quaker who believed in peace

the art or practice of taking and processing photographs

The study of life