A community is a collection of people with similar interests living in a particular area. A community, therefore, has two parts: the people and the area in which they live. One of these parts is a system we typically call “society.” Society is the enduring social group to which we all belong. The second part is a system that is our “ecosystem.” Our ecosystem is the physical environment in which we interact with other members of society. Our ecosystem is the land, the streams and lakes, the woodlands, even the urban parks where we work, live, play, and relax.