Presents brief information about the roots, trunk, leaves, fruits, and varieties of apple trees, pests that affect them, their economic uses, and more.

Describes the structure of and growing conditions for this popular flower and includes information about its various species and pests and diseases that affect it.

Describes the habitat, parts, pests and diseases, and varieties of orchids.

Describes the variety of colors, various parts, growing conditions, and other aspects of one of the most popular flowers in the world.

Describes the tulip flower, the colors and varieties of tulips, the bulbs and seeds, and the various insect pests and diseases that may attack these popular spring flowering bulbs.

Presents brief information about the roots, trunk, leaves, seeds, and varieties of the walnut tree, pests that affect it, its economic uses, and more.

Surveys the origin, geological borders, climate, water, plant and animal life, and economic and ecological aspects of the Arctic Ocean.

Surveys the origin, geological borders, climate, water, plant and animal life, and economic and ecological aspects of the Mediterranean Sea.