Yeah i prefer one on eutrophication then determining concentrations of phosphate/nitrate but the concentrations of them are linked to eutrophication so they might ask us to calculate something in the question
I hope so, but I think there might be a question about describing a procedure to determine the nitrogen content of fertiliser with inclusion of chemical equations and assumptions that can be made but i hope not
Would you say like its been tried in countries in brazil but economically it wasn't good and how it is a better alternative to petrol but there is debate on how ethanol might damage the cars motor etc