4.4 Growth rate of duckweed with eutrophication

IB Environmental Systems & Societies: 4.4 Growth rate of duckweed with eutrophication

This experiment using duckweed, Lemna minor, may not be possible everywhere as it is considered an invasive species, but if you can use duckweed it provides an ideal model species as it grows really quickly. I don"t usually give students this method but have them work it out for themselves. You can use a solution of a fertiliser (this will then have to be measured in dilutions of a solution) or you can use a salt containing...

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