short essay on energy

consequences of scarce resources and dense population. Unfortunately, worldwide implementation of a rigorous program of birth control is politically impossible. As the world's fisheries are worked out, it takes more and more energy to find and catch the remaining fish. The use of extrasomatic energy, and especially energy from fossil fuels, has made it possible for humans to exploit a wealth of resources that accumulated before they evolved. But when one understands the process that has been responsible for population growth, it becomes clear that an end to growth is the beginning of collapse. Through the use of fire, meat did not have to be rent by main strength; it could be cooked until tender. If there are survivors, they will not be able to carry on the cultural traditions of civilization, which require abundant, cheap energy. The control of fire and the exploitation of fossil fuels have made it possible for. They lived by their wits, and natural selection favored hardware that would permit quick-wittedness. In the fourteenth century, a yet larger and denser population in both Europe and China provided a hospitable niche for the Black Death.

short essay on energy

Our prices are determined by the grade you require, the word count you need and the delivery date you need the work back for. Acknowledgments I want to acknowledge the advice and encouragement of Virginia Abernethy, Thomas Eisner, Paul. Similarly, wood from the trunk of an oak tree is a resource in a way that wood from its twigs is not. Man became a hunter. Bauxite is a material resource, while coal is an energy resource. Agriculture is in trouble; it takes more and more fertilizer to compensate for lost topsoil (Ehrlich Ehrlich, 1990,. Pompano Beach is home to the Hillsboro Lighthouse, one of the last functioning lighthouses in Florida.

Independent locomotion was adaptive in the search for nutrients, although it took a little more energy than being buffeted about by the elements. Ore from an iron mine is a resource in a way that garden soil is not-even though both do contain iron. The global ecology handbook: What you can do about the environmental crisis. At current rates of consumption, known reserves of Petroleum will be gone in about thirty-five years; natural gas in fifty-two years; and coal in some two hundred years primed, 1990,. Social strife is another consequence of the rising cost of commercial energy. But when goods good song lyrics to write an essay about become scarce, and especially when per-capita access to goods is decreasing, ethnic tensions surface, governments become authoritarian, and goods are acquired, increasingly, by criminal means. And as the world's topsoil is lost - at a rate of 75 billion tons a year (Myers, 1993,. This capacity makes it possible for human beings to adjust to a wide variety of novel circumstances without having to wait many generations for evolution to change their bodies. Civilization refers, in its derivation, to the habit of living in dense nucleated settlements, which appeared as population grew in response to plentiful resources. Fission reactors could produce a great deal more, especially if fast-breeder reactors were used.