Energy In The 21st Century

button 1Running Head : ENERGY IN THE 21ST CENTURYEnergy 2In the prehistoric past , mankind was most probably not the headspring consumer of competency . As long as our ancestors provide themselves by hunting individually , their per capita consumption is exceeded by large zoology(prenominal)s such(prenominal) as elephants , walr gives and polar bears , and animals who hunt in packs (Sayre , 2005 . The trend changed just with the introduction of agriculture . People began to clear forests and prepare crops . As state practices became to a greater extent than developed , smaller communities expanded to towns more men are needed to produce food - unalike solitary or even group hunting , more men are needed to clear the forest , to plant and to harvest . Besides , more people has to be fed , including those not directly related to food production - administrators , merchants soldiers , etc . As a result , postal code consumption began to increaseThe discovery that animal labor can be utilized to improve farming techniques and thus increase food production was a major(ip) step in mankind s growing control of energy for its own advantage (Sayre , 2005 Animals could be used to lift peeing to greater heights for example thus enabling more land to be developed and irrigated . thither are limits to animal labor however and humans have to develop unfermented technology to meet increasing needs . It is precisely due(p) to the advancement in technology that mankind s consumption of energy increased even more Wind was harnessed as an energy get-go and windmills provided energy greatly exceeding that of horses . wet baron was besides used and water wheels began to be subservient in railway locomotiveeringFossil fuels , our chief source of energy today , set its way into human industry in the 18th ascorbic acid . The Industrial Revolution happening during this era , was characterized by the far-flung use of steam engine and internal combustion engine , the development of the two roughly 100 years asunder (Sayre , 2005 .

By the beginning of the twentieth century , the use of these power sources became even more widespread Steam engines , although able to runEnergy 3using woodwind instrument or charcoal , were usually made to run on coal . Internal combustion engines on the other flip over were usually made to run on fuels refined from anele (diesel or gasoline . The increasing use of these power sources also led to mankind s increasing dependence on fogey fuelsFrom the 18th century up to the present , mankind s use of energy has been increasing at unprecedented rates . There simply was an explosion of human s energy consumption . Energy is now equivalent to fossil fuels - technology has become mostly dependent on fossil fuels and the consumption of this energy source increased many times over . Putting it in figures , there was an increase from roughly 480 million careful haemorrhoid of fossil fuels consumed in 1900 to roughly 10 , 000 million metric tons at the end of the century . This constitutes a dumbfounding 280-fold increase in fossil fuel consumption for the 20th century (Sayre , 2005 Fuels in general also increased eleven-fold from...If you fatality to get a full essay, order it on our website: Ordercustompaper.com

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