Synopsis
This is an introduction to the ground below us for young children featuring Harry and Ralph, a young boy and his dog as they journey around the world in a hot-air balloon. On the way they come across all sorts of things, from weather balloons to polar bears and the geographic principles which shape our environment. This title introduces the components of our natural environment, focusing on rocks, soil and water. It also explains the way in which land formations such as mountains , valleys and volcanoes were formed long ago.
Les informations fournies dans la section « Synopsis » peuvent faire référence à une autre édition de ce titre.
