Hey,

To be very important Environment and interaction with them are the most important factor that needs to be maintained in order to sustain a healthy life on this planet.

Our environment is the store house of our oxygen. It takes the  carbon dioxide and nurtures us with the required amount of oxygen. It also provides us with the specified amount of food that is very important for anyone's survival. The shelter to stay is the gift of environment.

In short Environment is the key factor helping we humans in fulfilling our three basic necessities of life that accounts for food , shelter and clothing.

Hope that helps.

Thank you