Format 270 x 230mm　　Full of fascinating facts and quirky questions, this great series has something for everyone. Great to dip into, to use for homework or to browse through, this wonderfully collectable series has something for every inquisitive child. "Oceans and Rivers" is part of the comprehensive "Questions and Answers" series. It asks questions such as: where is the world's highest waterfall?; why are icebergs made of fresh water?; which lake is the biggest?; what is a "black smoker"?; and where is the deepest part of the ocean?