Definition of theme - Environment.

An environment is what surrounds a thing or an item. The environment is the surrounding. It could be a physical element - physical environment, that includes the built environment, naturual environment - air conditions, water, land, atmosphere etc or it could be human environment - people surrounding the item or thing. This is also known as the social environment and includes elements like the spiritual environment, emotional environment, home, family etc. The environment is a fluid dynamic thing. It is 'not' it 'becomes' . Basically it is the surroundings of an item or thing.

cited from:http://wiki.answers.com/Q/What_is_the_definition_of_an_environment