Definition of theme-environment

1.The surroundings or condition which a in which an organism lives.

2.The natural world as a whole or in a particular geographical area,especially as affected by human activity.

Source:Dictionary

3.The physical and biological factors along with chemical interactions that affect an organism.

source: wikipedia

4.The aggregate of surrounding things.

5.The air,water,minerals,organisms and all other external factors that affect the a given organism at any given time

6.An indoor or outdoor setting that is characterized by the presence of environmental art that is itself designed to be site-specific.

Source:dictionary.com

Summary

An environment is the surroundings of an object or organism that affects its growth,its way of thinking and behaviour.