Our living world of nature

Color photographs and text examine living things that inhabit caves, their environment, adaptations for survival, food supply, and habits. Includes descriptions of cave formations, a glossary of terms, and a list of caves to be visited and explored.

Color photographs and text examine living things that inhabit caves, their environment, adaptations for survival, food supply, and habits. Includes descriptions of cave formations, a glossary of terms, and a list of caves to be visited and explored.

Text and color photographs introduce the wide variety of plants and animals of the oceans and their interrelationships.

Surveys the animals and plants which bring life to the great variety of ponds in the United States.

Text and color photographs introduce the wide variety of plants and animals of the oceans and their interrelationships.