A Level CHEMISTRY 9701/12/F/M/16 Q35


In some rice-growing parts of the world, farmers use a combination of paddy fields and a fish farm. Rice paddy fields are flooded for much of the growing cycle and water running off the fields flows through pens where fish are raised. Nitrogen-based fertilisers are generally very soluble in water.

Which problems could result from farmers applying excess nitrogen-based fertilisers to their paddy fields?

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