26:06From the PhD Lab: How do biofilms help keep bacteria alive? - with Josh Horton
The Royal Institution
Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/calculus-all-old/taking-derivatives-calc/derivative-as-a-function-calc/v/visualizing-derivatives-exercise Exercise available at https://www.khanacademy.org/math/calculus/differential-calculus/derivative_intro/e/visualizing_derivatives More free lessons at: http://www.khanacademy.org/video?v=EeIXVN1zUeM
Published 2013-01-22 · Watch on YouTube ↗
Availability and playback restrictions are controlled by the original channel.
Allow Google Analytics to measure visits. Your history stays in your browser. Privacy details