Investigate, using a suitable stain, the pathway of water through the above-ground parts of a plant

Explain the process of eutrophication of water, limited to: - increased availability of nitrate and other ions - increased growth of producers - increased decomposition after death of producers - increased aerobic respiration by decomposers - reduction in dissolved oxygen - death of organisms requiring dissolved oxygen in water

Explain the importance of water potential and osmosis in the uptake and loss of water by organisms