A city affects a large area outside its own boundaries. For example, London alone is thought to need an area of almost 300 times its geographical size to satisfy its demands and for disposal of its waste and emissions.
Did you know that most of oil pollution in our oceans is the result of human activity on land and not tanker spills? If you notice oil leaking from your car, fix it right away! Never dispose of used oil into a storm drain.
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