palau为什么人类至今都没有能够发现外星人英文作文foru
department storeAs we all know, the source of life on the earth appeared 3.7 billion years ago, and it has been nearly 4.5 billion years since the birth of the earth. During this period, there were many large-scale extinctions in different degrees. However, today, we still suck the wind and drink the dew on this land, accompanied by fireworks. Why haven't aliens been discovered?
who knowsWhen the wave of popular culture promoted the exploration of alien life, we tried to draw the images of aliens through imagination-two big black eyes on the big green head and a soaring spaceship. But in reality, when rearchers are looking for signs of aliens, the aliens they expect are simpler than tho mentioned above. Space biology, as its name implies, is a discipline that studies extraterrestrial life. Alien life here refers to life outside the earth, including organisms similar to bacteria or single-celled prokaryotes. Intelligent alien life is everyone's dream, but people know that the probability of meeting aliens is very slim.
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rpr是什么意思Wisdom needs a simple life form to survive and reproduce in planetary disasters-this is the take on
same as the early human survival mode, even if there are predators, or themlves. There is no lack of controversy. From one point of view, some people think that intelligent life can't deliberately avoid the evolution beneficial to intelligence. If aliens really exist, there should at least be individuals with superior intelligence among them! On the other hand, some people think that there may be lf-destruction between intelligent lives-which means that aliens may have committed suicide before we found them.
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