Fourth level Fifth level Prediction Cost to consumer Now 10c/kWh In future 5c/kWh Role in global power supply Now <0,01% 2050 up to 4% Solar heating How it works? Focused light heats oil up to 400o> steam > generators Heat can be stored Where could be used? Large unpopulated areas (no sandstorms, strong winds) To be economically efficient, needs 2000 kWh of sun per day can't be further from equator than 40o Now Spain, Granda province Andasol power plant Andasol 1 and 2 Click to edit Master text styles Second level Third level 2 Fourth level
The colonization of Australia began at the end of the 18 century. The first settlers were convicts from England, who were taken to a prison camp at Botany Bay, where they led a hard life. th At the beginning of the 19 century free settlers began to arrive from Britain in large numbers. The south and east were settled before the north and the west because of tropical conditions and these areas remained unpopulated for a long time. As the colonies along the south and east coast developed, they refused to receive any more convicts. From the middle of the 19th century no convicts were brought from Britain to Australia. Wildlife Australia is the only continent on earth where marsupials live; they are also known as pouched mammals and egg-lying mammals. Ordinary mammals live also in Australia and these mammals are mostly imported there. Marsupials are kangaroos, wombats, koalas,
America. In 2001, 11th September Islamic terrorists crashed into the twin towers (WTC). Osama bin Laden and al-Qaeda are thought responsible for the terror, but they still haven't caught bin Laden. Population As of February 2009, the United States has a total resident population of 306 million which is about 4, 5% of the Earth population. By 2050 it is expected to reach 439 million people. North of the America is fairly unpopulated compared with the coastal areas. The most people live in New York City (8.2 million), Los Angeles (3.8 million) and Chicago (2.8 million). The most populated state is California where lives about 36.8 million people. The most less populate state is Wyoming where lives about 533 thousand people (That's almost half of Estonian population). 81% of people live in the cities or suburbs. In America lives about 221 million white people, Hispanic or Latino 44
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