A demonstration of the key points of the required practical to investigate osmosis in plant tissue for GCSE biology and combined science. Osmosis is a challenging concept, and this investigation ...

Diffusion Substances move from a high to a lower concentration down a concentration gradient Carbon dioxide, oxygen, water, food substances, wastes, eg urea No Osmosis Water moves from a high to a ...

The revolutionization of water purification has been seen since the 1980s, and it is helping to deliver clean, safe and great ...