Definition of Theme-Environment

"An indoor or outdoor setting that is characterized by the presence of environmental art that is itself designed to be site-specific. The circumstances or conditions that surround one; surroundings. The totality of circumstances surrounding an organism or group of organisms."

Sources :

http://dictionary.reference.com/browse/environment

http://www.answers.com/topic/environment

In short, an environment characterizes any kind of setting in a specific way. An environment is also something which surrounds every organism, dead or alive. Everything around us is the environment. We all live in different environments.