Anxious for an essay on how long the earth can last, 500 words!!

The Earth will last for about 4 billion years, but by then there will be no life on the planet. Don't say it, don't say it.

Keep your eyes closed, don't open them! Earth is over for you!

500 years later, my family has long since moved to the moon. One day, I missed my home on Earth and decided to revisit.

I boarded the raindrop spaceship and sailed into the vast, mysterious, mysteriousness of space. After a while, a jet-black planet was getting closer and closer in front of my eyes, and that was Earth. I drove the ship into an old factory.

As soon as I stepped out of the hatch, I was greeted by a foul smell, it turned out that this factory was discharging sewage, no wonder it was so stinky. I hurriedly ran back to the ship, put on my mask, and "...... whewI breathed a sigh of relief. At this time, an uncle who was dirty and smelly came to me and said to me

Uncle, why are you so dirty? And it's a bit ......The uncle shook his head lightly and said, "We are trying to change the earth."

Now I haven't bathed in 10 years because of the lack of water. "Oh, I see. So why are there so few people?

Thank you, uncle. "I really can't imagine that there are such heroes on the earth, they are silently dedicating themselves, even if they don't take a bath for 10 years, they have to do a good job on the earth; On the contrary, some people are cutting down trees, dumping garbage into rivers and streams, and some are spitting and litter......ing"Why are you doing this? Aren't you doing enough "good deeds"?

I can't help but think.

I walked forward again. Walking, walking, walking for a long time, I didn't find any creature (except people), I didn't find a single plant, there was a desert everywhere, it was no longer an oasis, rivers, lakes, rivers, seas, and even a stream had been polluted by sewage, and some had dried up.

Before I knew it, I was about to go back, and before I left the earth, I thought to myself: I wish the earth could change back to its original state: with clear streams and rivers, with beautiful oases, no longer the yellow, endless desert.

500 years later, the Earth will no longer be the mother of the human in the blue veil, she has been scarred and turned into the grave of humanity.

On Earth, trees are scarce, the concentration of carbon dioxide in the air is increasing, and the sky is gray and the sun is invisible, and it is impossible to distinguish between day and night. The order of people's lives was disrupted, they went insane, and they were admitted to the hospital. Suddenly, it started raining, and it was acid rain.

The rain fell on people's **, and there was ** disease, causing a moment of chaos. Who's to blame for this? It is the only home that human beings themselves do not protect well.

Ping-pong", there was a loud bang, and soil erosion caused a mudslide. It's just a normal day. The next day, it stopped raining, but the sandstorm swept in, and I don't know how long later, the sandstorm stopped, and the whole city was covered with yellow sand.

People started planting trees, but the sky "surrounded" by carbon dioxide could not get a ray of sunlight, and the plants could not photosynthesize, and they all died. Now, there is no return, but if this continues, the end of the earth is coming.

At an auction, the auction is nothing but the last drop of pure water on earth. It is packed in a special box so that it does not evaporate. At this time, someone bought it at a sky-high price of 10 million yuan.

After that, the second thing came out, a green leaf, and the last green leaf on earth, and of course, it was also sold for a sky-high price. At this time, the alarm sounded in "Dudu": "Listen, everyone, the oxygen on the earth will run out in three years, please leave in our spacecraft in one year; Listen, everyone, ...... in a year"People are gloomy.

yes, what else can people say at this time?

A year, time is like an arrow, and it has come in a blink of an eye. Renmen left the home where he had lived in the spaceship. People say goodbye to Mother Earth again. The earth wiped away its tears and thought: Where are you going, my dear sons and daughters?

Students, take good care of the earth, there is only one earth, and destroying it is equivalent to destroying us human beings. Take care of the planet! Start with me, start now, don't let such a tragedy happen! May the earth live forever!

None of the gods and horses have only humans who are stupidly patient.