Essay conservation environment better world | CUICUI
As the war continued, the Athenian hinterland was turned into a desert. Plato described the deforestation of , which remained barren until my lifetime, when the Greek government began to reforest it; many trees could only be planted by blasting holes in the limestone bedrock. When Attica's residents returned home after the Spartan occupation, they built their homes with a southern orientation to take advantage of sunlight, as wood was scarce. After five years of peace with Sparta subsequent to , Athens took to the offensive again and pretended to intervene in a war in Sicily to protect Ionian colonists, but they really did it to conquer Sicily and plunder its forests and other resources, and thereby build another naval fleet to conquer Sparta. The was a catastrophe for Athens, and it lost most of its navy. There were other setbacks and victories, but a starving and besieged Athens finally surrendered to the Spartans in 404 BCE. The environment around Athens could feed nothing but “bees,” and where wolves once abounded, not a rabbit could be found. As Athens slowly became the center of a wasteland, the changing perceptions could be seen in contemporary writing. When forests were plentiful in 700 BCE, Greek authors wrote of trees in pragmatic fashion or as impediments to progress. As the forests disappeared along with the ecosystems they supported, an ecological consciousness began to appear. Plato and Aristotle placed forests at the root of a civilization’s health, and . Conservation only became an idea when the environment had already been ruined by “progress." Numerous commentators of the day wrote about the connections between forests and a healthy water supply, and many clearly saw the relationship between deforestation, erosion, and desertification, including Plato. and his professional heir wrote about ecological ideas. Theophrastus could be considered the first ecological writer, and he had the beginnings of an ecosystems approach. He noted that when the region surrounding was deforested, it became dryer and warmer.
Essay on conservation of environment for a better world.
Short essay for students on environment conservation
Since the most dramatic instances of speciation seem to have happened in the aftermath of mass extinctions, this essay will survey extinction first. A corollary to is that if any critical nutrient falls low enough, the nutrient deficiency will not only limit growth, but the organism will be stressed. If the nutrient level falls far enough, the organism will die. A human can generally survive between one and two months without food, ten days without water, and about three minutes without oxygen. For nearly all animals, all the food and water in the world are meaningless without oxygen. Some microbes can switch between aerobic respiration and fermentation, depending on the environment (which might be a very old talent), but complex life generally does not have that ability; nearly all aerobic complex life is oxygen dependent. The only exceptions are marine life which has adapted to . Birds can go where mammals cannot, , for instance, or being , due to their . If oxygen levels rise or fall very fast, many organisms will not be able to adapt, and will die.
Free Environment Essays and Papers - 123HelpMe
Few people on Earth today have much understanding of the relationship between . Most people think that money runs the world, when it is only an accounting fiction. Money by itself is meaningless, and financial measures of economic activity can be highly misleading. I noted long ago that scientists had little respect for . that obscured the role of energy while exalting money. What a coincidence. Understanding this essay's first half will help with comprehending the last half, and the connections between energy, ecosystems, and economics should become clear.