地球,宇宙中一颗充满活力的星球,生命在此诞生、繁衍,生生不息。地球之所以能诞生生命,有诸多原因:如太阳系八大行星各行其道,互不干扰;稳定的太阳光照提供源源不断的能量;远近适中的日地距离,保持适宜的温度;适度的地球引力吸引大量气体,并演化为以氮和氧为主的大气,大气层供给生物呼吸;还有珍贵的液态水。作为地球上的生命,自然可 Earth, a vibrant planet in the universe, where life is born, prospered, and lives endlessly. There are many reasons why the Earth can be born: For example, the eight planets of the solar system each carry its own way and do not interfere with each other; stable solar illumination provides a steady stream of energy; the distance between the sun and the sun is moderate and moderate; the appropriate temperature is maintained; moderate gravity attracts A lot of gas, and evolved into an atmosphere dominated by nitrogen and oxygen, the atmosphere supplies biological respiration; there is precious liquid water. As life on Earth, naturally