Male peguins huddle together to survive the bitter cold storms in Antarctica. Meanwhile, the female penguins must journey farther to the sea for food because of the formation of new ice.

What starts off as an innocent game of tag between Kiara and Kovu ends in a confrontation between Simba and Zira about territory and expulsion.

Mr. Burns makes a political campaign to rally the support of his peers. While doing so, he introduces his three-eyed fish, Blinky, then summons an actor portraying Charles Darwin to explain the concept of evolution.

This Crash Course video gives different explanations of derivatives. She iterates how to use the power rule with negative exponents as well as fractions.

Hank illustrates the differences between plant and animal cells. Both are eukaryotic cells, but they have their own unique characteristics. Hank also explains why humans cannot eat wood and plants in the way that other animals can. Key Words: Eukaryotic Cells, Prokaryotic Cells, Organelles, Cytoplasm, Cell Wall, Cellulose, Photosynthesis, Plastids, Chloroplasts, Central Vacuole