Environment means that everything that exists around the whole of life and no life. Both occurring naturally and what is man-made, consisting of abstract things and have a relationship of mutual and beneficial to the livelihood of human beings.
1. natural environment is something that occurs naturally, such as Earth, water, air, forests, wildlife, and the environment of this type occur naturally may take any or only slowly, depending on the type and category.
2. man-made environment is something that humans use the knowledge that has been inherited and developed to teach each other forever.
There are human relationships with the environment closely in the past, the problem with the balance of nature by ecosystem has not happened much. This is because people in the main era alive under the influence of nature. Changes to the natural environment is gradually. Everything in nature is able to balance itself.