Bookworms. Nature's cycles

Introduces the idea of cycles in nature, providing an explanation of the food chain by which plants, animals, and people are nourished.

Simple text and color photographs depict the changes that occur in nature during each season of the year.

Introduces the idea of cycles in nature, and explains the process by which water falls to Earth, goes back up into the air, and comes down again.

Introduces the idea of life cycles in nature, and discusses the life cycles of plants, explaining how they grow from seed, to plant, to flower, and back to seed again.

Introduces the idea of cycles in nature, and discusses the continuing rotation of day and night, explaining the importance of each to people, plants, and animals.