In general, environment refers to the surroundings of an object. -from wikipedia http://en.wikipedia.org/wiki/Enviroment (The environment is our surroundings.)
The environment is our life support system. It includes everything that we rely on during our lifetime such as air, water, metals, soil, rock and other living organisms. It is important to remember that the state of our environment is influenced by our behavior and that we have the opportunity to either nurture or mistreat it. -from dictionary.com http://www.sustainable-environment.org.uk/Environment/environment.php (The environment is our life support which we rely on. It is influenced by us and we can either nurture it or mistreat it.)
The Environment is our surroundings and a place we live in and rely on for our life support. The environment may influence us or we may influence it. It can be nurtured and expanded or mistreated and destroyed.