Birds adapted to almost every climate on the planet, from the Arctic to the rain forests. A presentation focused on birds covers their similarities and differences. It starts with their evolution from reptiles, their many physical...

Go deep in your paleontology unit with this spectacular set of slides! It introduces viewers to the types of fossils, a few famous fossils, and the geologic eras. This is done with easy-to-read text, diagrams, photos, and even videos.