Earth Compared to Other Planets

Since Earth has an atmosphere it does lots of things to protect us. One thing it does is keep big meteors from hitting the surface. The mososphere is the layer of the atmosphere that protects us from large meteors, because meteors burn up there. On other planets without atmospheres, meteors just hit the planet and create craters. The stratosphere protects us from ultra violet rays from the sun. The ozone layer is what protects us. On other planets rays shine directly onto the planets surface causing extreme temperatures. The atmosphere also keeps heat out and traps other heat in. On planets without atmospheres, sun rays only heat the lit side of the planet. The atmosphere also creates weather. Weather occurs in the troposphere. On other planets without atmospheres, weather can't occur, because clouds aren't present.