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Write a 500-word science fiction story composition
In 3020, the world's top scientists discovered the wave crystal in the "Science and Technology Forest", which is the last forest made by human beings. Due to extensive exploitation and utilization, there are not many real forests in the world at present. Bo Jing is the only survivor from a distant wind-like planet, and its arrival further confirms the fact that a devastating disaster-devouring the empire is marching like the earth!

At this time, Bojing floated transparently in mid-air and a lovely girl appeared in it. She shouted: the army devouring the empire is approaching here, and it has destroyed our home. Its speed is amazing. In a few decades, it will devour the earth! !

After listening to the little girl, everyone was stupid! The home on which they live is about to disappear! "Why, we didn't provoke the empire, why did they eat us!" Humans growl angrily.

"hey!" I only heard the sigh of the little girl in Bojing! "How beautiful our home is! There are several white clouds floating in the blue sky. There are many trees and the air is so clean and natural. Greedy people use these natural resources, constantly develop and grab them, resulting in our planet not even a healthy tree. What it fears most is the purest natural resources. At this moment, when it swallowed the empire, it took advantage of our shortcomings and swallowed our planet. It absorbs all the nutrients and available substances on the earth. About 10 years later, it spit out the debris of the planet, full of smoke, bare land and erupting volcanoes. I am a survivor of this planet.

After listening to the little girl's story, everyone was dumbfounded-the earth is about to be destroyed, which is caused by ourselves. It's too late now, and there is no regret medicine to take. It's too late to mend. It was their own ignorance that caused the disaster. Everyone just sits there waiting for the moment of death, because they know that the girl said "decades" and it's only been a few days! ! At this time, human beings are regretting, scolding themselves, scolding themselves for ignorance and greed. ......

On May 13, 3020, the terrible devouring empire came, and the earth was completely dark and gradually swallowed by devourers. The terrible moment has finally arrived. .....

In 3 120 years, the earth completely lost its function and became a ruin. It is a planet described by the word "garbage", and it is not others but ourselves that lead to this result!

If it's too long, shorten it yourself. I hope you can adopt it!