Today's two AP Biology videos of the day are all about water:
In physical science, we did the pre-lab from pg. 37, which is all about physical properties of matter. We also began notes on Chapter 2 - Properties of Matter. We talked about viscosity of liquids and watched the following video about the longest running science experiment in the world - some scientists have been watching a container of pitch for nearly 100 years to show that pitch is indeed a liquid.
