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地球的生命依能源而生存。自养生物从太阳放射热中获得能源,而异养生物则从自养生物获得能源。通过光合作用,能源渐渐形成和贮存,随着能源贮存达到一定密度,依靠较多能源的异养生物则进化成使用能源的生物。人类便是这样一种异养生物。的确,体外能源的使用能力使人类比任何其他得到进化的异养生物利用了多得多的能源。火的控制和矿物燃料的利用使人类在很短时间内开发出在人类出现很久以前就已存在的大量能源。 通过利用体外能源,使越来越多的能源环境适应人类的需要,人类有效地扩展了其能源利用范围,从而在很长时间内能源的供给完全满足需求。这又
The life of the earth depends on energy. Autotrophs get their energy from the sun’s heat, while heterotrophs get their energy from autotrophs. Through photosynthesis, energy is gradually formed and stored. As energy storage reaches a certain density, more energy-dependent heterotrophs evolve into energy-using organisms. Human beings are such a kind of heterotrophic creatures. Indeed, the power of extracorporeal energy uses much more energy than any other evolved heterotrophs. The control of fires and the use of fossil fuels enabled mankind to develop, within a very short period of time, a great deal of energy that existed long before humanity was there. By using extracorporeal energy and adapting more and more energy and environment to the needs of mankind, mankind has effectively expanded its energy utilization range, so that the supply of energy can completely meet the demand for a long time. Again