Life Of a Game Warden - Essay by Monjoe13 - Anti Essays

Paleobiologists are fascinated with the history of life on Earth, and I share their sense of wonder. If I can impart the slightest sense of that to my readers, this essay's first half will be successful for that alone. However, just as a math curriculum builds on itself, as each class forms the foundation of the next one, this essay's first half is intended to help readers develop a foundational understanding. With that foundation built, the information in this essay's last half can make a profound impact and help readers achieve personal paradigm shifts. That is essentially this essay's purpose. Studying this essay's first half is far from a waste of time for those whom I seek, but is vitally important.

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There are dry and wet seasons in the tropical rainforests where and live, and they must seasonably change their diets to adapt to available foods. Beyond those rainforests, seasonal variation is more pronounced and, once the easy meat was gone, people survived by engaging in the hunter-gatherer lifestyle familiar to today’s humans. A sexual division of labor existed: men hunted and women gathered. Men had the strength and speed required to hunt wary animals, particularly large game, while women were less mobile, partly due to caring for children.

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Entropy is another important concept for this essay. Entropy is, in its essence, the tendency of hot things to cool off. The concept is now introduced to students as . Even though science , it can measure its effect. At the molecular level, entropy is the tendency of mass to become disordered over time, as the random motion of molecules spreads in collisions with other molecules, until the interacting molecules have the same . Life had to overcome entropy in order to exist, as it brought order out of disorder and maintained it while alive, and it takes energy to do that. The prevailing theory is that net entropy can only increase, and life has to create more entropy in its surroundings so that it can reduce entropy internally and produce and maintain the order that sustains itself. Life is called a negentropic phenomenon, in which it uses energy to reverse entropy to make the order of its organism’s structures, and it is continually using energy to reverse the natural entropy that is called decay.

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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.