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当你的双脚牢牢地站在地面上时,你可曾想到地球上有2/3的地方却都覆盖着水。地球表面71%是由海和洋组成的。海洋是生命的起源。当地球在45亿年前形成的时候,地球上面并没有生命,只有狂风暴雨、电闪雷鸣、火山喷出的有毒气体,也没有大气层在地球上面挡住太阳辐射线。慢慢地,较暖和的浅海形成了。在这些海里,最早的生命形式在水的保护下开始出现。最早的生命形式是细菌。然后又逐渐演化为蓝绿色藻类植物。这些植物产生了动植物生存所需要的氧气。
When your feet stand firmly on the ground, you may have thought that two-thirds of the earth was covered with water. 71% of the Earth’s surface consists of sea and ocean. The ocean is the origin of life. When the earth was formed 4.5 billion years ago, there was no life on Earth. Only the stormy, thunderstorm, volcanic gas emanated from the volcano, and no atmosphere blocking the solar radiation on the earth. Slowly, the warmer shallow sea formed. In these seas, the earliest forms of life began to emerge under the protection of water. The earliest form of life is bacteria. Then gradually evolved into blue-green algae. These plants produce the oxygen needed for the survival of plants and animals.