ecology

A gardener upsets the natural balance in his garden by using poison and learns the value of another method of controlling pests.

Eleven-year-old Tom McLeod from Aklavik in Canada's MacKenzie Delta, tells about living in the Northwest Territory, trapping and hunting, and his family.

A Canadian ranger, who also hunts, traps, and runs a business, describes her work, the traditions of the Gwich'in Indians, and the land on which she lives.

Highlights important partnerships going on in the ocean between different animals for survival.

Describes the importance of a banyan tree to an Indian village.

Discusses various plants, such as blackberry, orchid, and milkweed, that provide centers for small communities of animal life attracted by their flowers, fruits, and seeds.

Explores the environmental threats posed to the Earth's natural processes, highlighting issues such as land degradation, air pollution, and waste disposal that could permanently alter the planet, considers possible solutions to help protect the Earth's biosphere.