Biology, The study of living organisms., Atmosphere, The layer of gases surrounding the Earth., Campus, The grounds and buildings of a school or university., Culture, The ideas, customs, and social behavior of a group of people., Library, A place where books and other learning materials are kept., History, The study of past events., Essay, A short piece of writing on a particular subject., Chemistry, The science of matter and its interactions., Journey, A trip from one place to another., Recycle, To process used materials to make them usable again..

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