Biological diversity, also commonly called genetic diversity, refers to the variety of organisms on Earth. Scientists are concerned that many species will become extinct because of extensive development in the tropical regions. This packet is designed to increase student's awareness about direct and indirect causes of extinction, endangered species, and the reasons for preserving the genetic diversity of life on Earth. Activities included are: (1) "Variety is the Spice of Life"; (2) "Pave Paradise?"; (3) "Let's Make a Deal"; (4) "Invasion of the Species Snatchers"; and (5) "Talk to the Animals." Each activity includes a brief description, a concept statement, objectives, a list of relevant subject areas and skills, a list of materials, lesson preparation direction, and a suggested procedure. Several of the activities are accompanied by reproducible materials such as game cards. (CW)