IGCSE Biology 0610/42 Paper 4 Theory (Extended) May/Jun 2020
Fig. 4.2 shows the results. 0.00 0.04 0.08 0.12 0.16 0.20 0 2 4 6 8 time / days herbicides sprayed on the fields 10 12 14 16 concentration of herbicides in the lake water samples / mg per kg herbicide A Key: herbicide B Fig. 4.2 (i) Compare the concentrations of herbicide A and herbicide B in the lake. Use the information in Fig. 4.2 to support ...
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