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 ...

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

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 ...