(c) Rationale: The juxtaposition of different uses may cause various problems. An activity may cause people to experience noise, dust, fumes, odors, or other undesirable effects. Examples of possible incompatible uses include factories or expressways next to housing, residential developments next to farms, and residential, commercial or industrial development adjacent to wetlands or endangered or threatened wildlife or vegetation species habitat. Vegetated buffer areas between uses can overcome, or at least ameliorate, many of these problems especially if earthen berms are included. Buffers can benefit users of both areas. Where farms operate near a residential area, for example, a buffer can protect residents from of the noise and smells of farming, while protecting the farmers from the imposition of local regulations controlling hours in which machinery can be used. Buffers serve several important functions, including maintenance of wildlife habitat, water purification, open space and recreation, and control of runoff. Buffers may include fences, landscaped berms, and vegetated natural areas.