500 facts - earth English Books•English Books•kids•Young Adults
The Kid Who Came From Space•Into the Sideways World•The Gone series:light•The Gone series:lies•The Gone series:Gone•The Gone series:hunger•The Gone series:plague•The Gone series:fear•my beautiful world : my friends senses•my beautiful world : the journey of a piece of paper•my beautiful world : the airport and the toy box•my beautiful world : ayman's tale
Earth, our home, is the third planet from the sun. It is the only planet known to have an atmosphere containing free oxygen, oceans of liquid water on its surface, and, of course, life. .. About a fifth of Earth's atmosphere is made up of oxygen, produced by plants.