“One Planet, One Experiment”

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“What we do know is that there is only one planet to do it on, and only one species of being capable of making a considered difference.” “Edward O. Wilson expressed it with unemployable brevity in The Diversity of Life: ‘One planet, one experiment.’(P478).” Four billion and six hundred million years ago, the Earth was formed in a just right position and time in our solar system. The Sun which is the fixed star of our solar system is in a proper size “one that is big enough to radiate lots of energy, but not so big to burn itself out swiftly (P246).” And our Earth is a planet with a molten interior which provides us with an atmosphere and a magnetic field to protect humans. Plate tectonics is also given by the molten interior, which it can renew and rumple the surface of the Earth. It directly causes the existence of the oceans. A properly sizable Moon is also needed to make the Earth stable. In a word, the Earth is an extraordinary miracle in the universe. “If you imagine the 4.5 billion odd years of Earth’s history compressed into a normal earthly day, then life begins very early, about 4 A.M., with the rise of the first simple, single-celled organisms, but then advances no further for the next sixteen hours. (P336)” One billion years later after the birth of the Earth, the first kind of organisms appeared. In these one billion years, the Earth almost had no difference from other planets. Although every planet in the universe is unique and different, most of them share a lot of in common. They are all bleak and desolate, so as the Earth at that time; the Earth was brutal to any organism like most other planets. However, the Earth owns many more advantages like it is covered by the oceans and has an atmosphere than other planets. In this circumstance, the first organisms made themselves; maybe it was like some chemical reactions. After the appearance of the first

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