1. the world; its length is 5.614 km.

1. About 85% of Australians live within 50 km of the coastal zone.2. Australia is one of the least densely populated countries in the world. 3. In Australia, electricity prices are highest in the world.4. The largest sand island in the world, Fraser is also in Australia.5. Australia and Antarctica were a single part 50 million years ago.6. Australia is a sixth largest country in…

Water pollution has become a major concern in last century

Water pollution has become a major concern in last century. Water pollution can define to many ways. Usually, it means one or more substances had built up in water such an extent that can harm people or animals. For example, if u poured a cup of ink into a river, the ink will disappear into the river immediately to much large volume of the clean…

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