In this biology instructional activity, 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...

For this earth science worksheet, students answer 85 multiple-choice and short-answer questions on various earth science concepts.

This site from the University of California, Berkeley offers a biography of George Cuvier. Scientific ideas of George Cuvier are presented, such as those related to comparative anatomy, fossils, the idea of extinction, and others....