Question

求答案 很迷茫

Ladies and gentlemen，I return to this year in a time machine .In the year 2500,we are able to travel through time to any year in the history of the earth. This year is your last chance to change your lifestyle to save the earth.
Beginning in the middle of 20th century ,a few people were worried about polluting the earth’s water and air ,but most people did not change their ways of life .Instead, they continued to pour dangerous chemicals and other wastes into lakes and seas, to drive more and more cars and trucks, and to cut down trees.
By the year of 2200,the earth’s water was completely polluted. People could no longer drink water, and they had to use other types of liquids. Scientist said that in the future there will be too many people on the earth But not enough was done
So ,by the year of 2300,there were so many people that food became scare .There was no water to grow food and all of the fishes in the lakes and seas died because of pollution. Terrible wars（战争） broke out between the rich and the poor. Scientists were working very hard to find another planet in space where humans could live.
By the year 2400,the air was too polluted for humans to breathe. So we had to leave the earth. But only the rich were able to leave. Where did we go? No –where. You see scientists did not find another safe planet, so now we must travel around the universe in our spaceships .We were still looking for a place to call our home.
So it is up to you to change history. There is sill hope. You must change your lifestyle now, before it is too late.
What problem is mainly talked about in paragraph2?
what is the most probable reason for the warss between the rich and the poor

Answer 1

女士们，先生们，我回到这一年的时间机器。在2500年，我们能通过时间旅行的任何一年，在地球的历史。这一年是你最后的机会去改变你的生活方式来拯救地球。开始在第二十世纪中，一些人担心污染水和空气，但大多数人并没有改变他们的生活方式。相反，他们继续将危险化学品和其他废物进入湖泊和海洋，带动更多的汽车和卡车，而砍伐树木。截止到2200年底，地球的水完全被污染了。人不能再喝水，他们不得不使用其他类型的液体。科学家说，在未来会有太多的人在地球上却没有足够的了所以，在2300岁的时候，有那么多人，食物变得恐慌。没有水来种植食物和所有的鱼类在海洋和湖泊的死是因为污染。可怕的战争（战争）之间爆发了富人和穷人。科学家们的工作很难找到另一个星球空间，人类可以生活。2400年的空气污染太严重，对人类呼吸。所以我们不得不离开地球。但只有富人才能离开。我们去哪里？没有–哪里。你知道科学家们还没有找到另一安全的星球上，所以我们现在必须周游宇宙在我们的宇宙飞船。我们仍然在寻找一个可以叫家的地方。所以它是由你来改变历史。有窗台的希望。你必须改变你的生活方式，在太晚之前。什么问题是主要讨论条第二款？什么是最可能的原因为穷人和富人之间的人

Answer 2

question1: people hadn't care environment since the beginning of the middle of 20th century.
question2:the lack of space and food