Energy problems are getting worse now; for example, oil is going to run out. Although oil and gas can make energy, they cause lots of pollutions. Some countries will fight for oil; it starts wars and causes damages. The price of energy gets higher and higher. What can we do to solve these problems? Maybe we can create new energy sources. We can try to use less energy.
After one hundred years, what will the world be? I think people will solve these energy problems. We use energy sources which can be used again and again. The following are some examples: wind, water, waves, nuclear, bio-mass. The price of energy is lower than now. People will invent some transportation methods which won't cause pollution, and they will plant trees to protect the Earth.
I believe that people will solve these problems in the future and we will have a nice world.
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