Video 4 of the Echolocation Unit. Pa Fossil outlines the mission details for our dynamic duo. Bonehead and T-Bone must sneak down into the bat cave, and stop JP from activating his evil bat blaster beam, so that the bats in the cave can...

This video explains the natural processes of weathering, erosion, and deposition and how they have shaped the Earth's landscape over billions of years. It discusses how rocks are broken down into smaller pieces by agents such as rain,...