When did the Federation of Australia occur?

When did the Federation of Australia occur? 1 January 1901 Australia’s 6 British colonies became one nation on 1 January 1901. The Constitution is one of the Commonwealth of Australia’s founding documents. After many years of debate and drafting, it was passed by the British Parliament, and given royal assent (approval by the Queen), in […]

What type of pollution can you find in cities?

What type of pollution can you find in cities? There are different types of pollution: water pollution, air pollution, solid waste pollution and noise pollution. All of these can be found in urban areas. The main sources of pollution are household activities, factories, agriculture and transport. What is city pollution? Cities are major contributors to […]

How much of Earth is magma?

How much of Earth is magma? More than 80 percent of the Earth’s surface–above and below sea level–is of volcanic origin. Gaseous emissions from volcanic vents over hundreds of millions of years formed the Earth’s earliest oceans and atmosphere, which supplied the ingredients vital to evolve and sustain life. Does magma ever run out? A […]

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