This book, a unique combination of a printed book and online content, is an introduction to natural resources and man-made things, such as oranges and orange juice, wheat and bread, and clay and bricks.
AV2 book code - Natural and man-made - Oranges and orange juice - Wheat and bread - Corn and fuel - Trees and lumber - Clay and bricks - Rubber trees and rubber toys - Sheep fur and wool - Cotton plants and cotton clothes - Natural or man-made?
