Khan Academy: Ecology: Introduced Species and Biodiversity

How do introduced species cause problems for biodiversity? What makes a species invasive? When humans introduce non-native species to a new environment, it can have disastrous impacts on native species and the entire ecosystem. [9:55]

What a biodiversity hotspot is, and why these locations are important to preserve.

Learn the basics of acids, bases, proton concentration, the pH scale, and buffers in this article.

Are all coral reefs the same? Each regional ecosystem has its own assemblage of species and each contributes uniquely to global biodiversity. Explore why ecosystem diversity is important for conservation decisions. [4:13]

Different approaches to conservation and how they can protect species and habitats. [12:04]

The video lesson from Khan Academy provides a lesson for the AP Chemistry course. This video lesson explains the relationship between Ka and Kb, and pKa and pKb. Examples of finding Ka of a weak acid given Kb of the conjugate base.

Learn about the existence of an upward force on an object equal to the weight of the fluid displaced while that object is submerged in a fluid with this video. This video will introduce students to Archimedes' principle and buoyant...

Find the relationship between standard cell potential and equilibrium constant K. [5:18]

A video lecture defining working and energy and by giving types of work we can do and what type of energy transferring to an object when doing that work. Understand how work and energy are related. [9:17]

An explanation of how an element's location on the Periodic Table can help identify electron configurations and orbitals. [14:30]