Students explore the three main organismal divisions. Students classify organisms by invertebrates, vertebrates, and plants. They observe the differences and similarities between these groups.

In this biology learning exercise, students identify and match various classes of species found today. Then they explain why biodiversity exists today on earth and define evolution. Students also describe who a paleontologist is and what...

Tenth graders conduct a critical analysis of current evolutionary concepts. They describe how scientists continue to investigate theories. Students examine examples with experimental data that suggest alternative methods of species...