Brush up on your knowledge to blitz the checkpoint quiz
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Brush up on your knowledge to blitz the checkpoint quiz

Sydney : Australia | Aug 17, 2012 at 12:10 PM PDT
Source: Sydney Morning Herald
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How long does water remain in Sydney Harbour before being flushed out to sea?...If we know how long a ''drop'' of water takes to leave the harbour, we can predict the effects of contaminants, weeds, fish migration and a range of other important processes. FULL ARTICLE AT Sydney Morning Herald
 
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