Conservation of Natural Resources (2)

Unmodified natural ecosystem as well as those ecosystems that have been changed to differing extents through human activity may be expected to play an important role in the future development of environmental biology. The unmodified ecosystems constitute a kind of protected area and characteristically contain a rich variety of organisms, some of which can serve as reliable indicators for disturbance in the system. As a consequence of increasing tampering of nature by man, natural reserves are greatly dwindling and are becoming the main sanctuaries for wild plants and animals.