Handout
City University of New York

The World of Cells: Osmosis

For Students 9th - 10th
This definition and explanation osmosis shows how water diffuses from regions where it is in high concentration to regions where it is in low concentration.
Handout
Other

Fundamentals of Reverse Osmosis

For Students 9th - 10th
This site provides a basic definition of reverse osmosis, with a bit of a slant on why water pretreatment is important.