When I was a elementary school student, I had loved dinosaurs. Especially I had loved Apatosaurus. Apatosaurus is one of Plesiosaurus. I have figure of this. If dinosaurs have lived now, I want to ride them. But we must care for being eaten by some dinosaurs.Now dinosaurs haven't exist. They became extinct. Many researchers have guessed the reasons.The most famous reason is that Giant meteorite fall. But some researchers guess that the reason is Global warming.
There were many dinosaurs so carbon dioxide emission increased. It was too hot for dinosaurs to live.
Now people are concerned about global warming. If temperature continued rising, we may become extinct like dinosaurs. So we should do something to save earth. I try not to use heater very much. I use heater when I can't endure. I am careful for catching a cold.
