This unit is intended to help students become aware of overall relationships and interactions that exist between the various segments of the environment. The unit consists of four topics: (1) Geology--The geological history of the earth as illustrated by fossils; (2) Plants and Animals--the role and interactions of plants and animals in the environment; (3) Rivers and Reservoirs--the uses, patterns, and locations of rivers and reservoirs in Kansas; and (4) Archery--an example of a nondestructive recreational use of the environment. For each topic there are behavioral objectives, student activities, and teacher suggestions. Teaching aids are found in the appendix. (JP)