Learning outcomes
By the end of this unit you should be able to:
define and use in context, or recognise definitions and applications of, each of the terms printed in bold in the text;
identify some of the reasons why clean, fresh water is an increasingly scarce resource for many people in the world;
explain what is meant by the bioaccumulation of xenobiotic chemicals and identify the implications that this has for what people can safely eat;
distinguish between the effects on human health of high and low levels of environmental pollution by nitrogen compounds;
explain what is meant by an endocrine disruptor.
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