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Osmosis is the movement of water across a semi-permeable membrane from an area of low solute concentration to an area of high solute concentration. Osmosis helps regulate the flow of water in and out of cells, which is crucial to their function.

This video explains how pie charts can be used to display data in a more 'user-friendly' way.

This 20 minute YouTube video explores the differences between small and large scale agriculture and the uses of each.