Describes the parts of a tree and how trees grow, looks at the economic and ecological roles of trees, and explains why it is important to save the rainforests
Discusses the problem of waste disposal, stresses the importance of recycling, and shows how paper, cans, glass, plastics, and old clothes can be recycled
Discusses the problem of waste disposal, stresses the importance of recycling, and shows how paper, cans, glass, plastics, and old clothes can be recycled
Describes the parts of a tree and how trees grow, looks at the economic and ecological roles of trees, and explains why it is important to save the rainforests
Looks at how fruit, vegetables, milk, eggs, meat, and fish are produced for the market, and assesses the impact of chemicals and modern farming methods