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...work. Contamination with even small amounts may damage the nervous, digestive and immune systems as well as lungs, kidneys, skin and eyes. Fetuses and young children are most susceptible, with studiesdocumenting mental retardation in a small proportion of children in fishing communities of countries such as Brazil and China. The Convention takes its name from the...

...work out how a mountain range has grown through time is via a science called geochronology. Geo- relating to the Earth, and -chronology relating to the timing and duration of events. Geochronology is the science of dating geological events and processes and in particular, we can use geochronology to calculate when a mineral first grew. I am applying this science to rocks...