In this lesson, students will learn that some evolutionary change is rapid and discontinuous, and some change is gradual; how fossil evidence can provide clues to the past; and how speciation may account for...
This page features an article describing the invasion of the green crab into New England waters. Learn all about this scallop-eating invasive species that is now spreading to the west coast. An excellent lesson on...
This video demonstrates conservation of angular momentum. When a person on a rotatable platform (initially at rest) tilts the axis of a rotating bicycle wheel, conservation of angular momentum results in spinning of the...
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