Practice is Expressive behavior Or reaction that occurs when exposed to stimuli. It will come from inside or outside the body. Everything that humans do not feel Others will see whether or not it is the behavior of such a laugh, cry, eat, etc. Based on the concept of RE- Thong process to make people appreciate and understand the principles of the relationship between humans and the environment will lead to the development of attitude. awareness and responsibility for the environment. Including the development of skills in making decisions about the environment and the creation of good ethics in the practice environment for better environmental quality. This is consistent with research