英国阿德莱德代写assignment:全球变暖

2019-12-13 23:08

全球变暖不仅会影响人类;它也会影响海洋生物。这是因为水温会上升。一个€œCorals不能容忍的温度几度温暖比usuala€(快速的事实)。在过去的几年里，由于水温的升高，珊瑚逐渐灭绝。其他海洋生物可能会迁移到温暖的水域。温暖的海水会让它们以为自己是在自然栖息地。这种未知迁移的一个坏处是，在它们新的、不适应环境的栖息地，食物将变得稀缺。例如鲑鱼;鲑鱼对水温也很敏感。夏季水温温暖时，鲑鱼的新陈代谢率很高。在冬季，它们的新陈代谢会减慢，这是件好事，因为此时可获得的食物较少。随着全球变暖和水温的升高，鲑鱼的高代谢率将逐年延长。他们可能会吃掉所有的食物，结果许多鲑鱼会死亡。全球变暖已经扰乱了海水循环的模式。冷水沿着海底向赤道移动，而赤道周围的温水则穿过海洋表面向两极移动。这个过程对海洋生物的生存非常重要。这个循环过程把含氧的水带到海底。如果这个过程不再发生，海底的水将会耗尽生物体生存所需的氧气。其结果是深海生物的死亡人数增加。
英国阿德莱德代写assignment:全球变暖
Global warming would not affect only humans; it would also affect sea life. This would happen because water temperatures would rise. “Corals are intolerant of temperatures just a few degrees warmer than usual” (Fast Facts). There have been problems with corals dying out in the past few years because of increased water temperatures. Other marine life would probably migrate to warmer waters. The warm water would make them think they were in their natural habitat. A downfall to this unknown migration would be that food would become scarce in their new, unadapted habitat. An example is salmon; salmon are also sensitive to the temperature of the water. During the summer when the water is warm, salmon have a high metabolic rate. During the winter months, their metabolism slows down, which is good because less food is available at this time. With global warming and increased water temperatures, salmon would have a high metabolic rate longer each year. They would possibly eat all the available food and many salmon would die as a result.Global warming is already disturbing patterns of the circulation of seawater. Cold water moves along the sea floor toward the equator and warm water around the equator moves toward the poles across the surface of the ocean. This process is very important to the living of ocean species. This circulation process brings oxygenated water to the sea floor. If this process no longer happened, water along the sea floor would become depleted of the oxygen organisms need to survive (Fast Facts). The resulting factor would be more death among deep-sea organisms.

• 上一篇：南澳阿德莱德哲学作业代写:死刑
• 下一篇：澳洲阿德莱德代写作业：吸烟导致肺病