500 facts - earth English Books•English Books•kids•Young Adults
Harry Potter Colouring Book•Ancient Myths Boxset•Anne of Green Gables : The Complete Collection (8 Books Set)•Dragons in a Box : Magical Creatures Collection•Which Way Round The Galaxy•The Inheritance Cycle 4 : Inheritance•Keeper Of The Lost Cities 6 : Nightfall•Take Me With You When You Go•Beasts Of Ruin•Goblins 3 : Goblin Quest•Goblins 2 : Goblins Vs Dwarves•Goblins 1
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.