Our changing earth /
Canby, Thomas Y.
Our changing earth / Thomas Y. Canby ; prepared by the Book Division, National Geographic Society. - Washington, D.C. : The Society, c1994. - 199 p. : col. ill. 25 cm.
Discusses factors which cause destruction to life on earth such as the following:deforestation,depletion of the ozone layer with its threat of harmful ultraviolet radiation loss of reefs and wetlands,contamination of the air with emissions and the waters with pollutants and overpopulation . Discusses further the cause of the altered ecosystems namely:agriculture and industry and their hazardous effects to the earth and its populace.
870449109
Conservation of natural resources.
Environmental degradation
Environmentalism.
R GE 195 .C160 1994
Our changing earth / Thomas Y. Canby ; prepared by the Book Division, National Geographic Society. - Washington, D.C. : The Society, c1994. - 199 p. : col. ill. 25 cm.
Discusses factors which cause destruction to life on earth such as the following:deforestation,depletion of the ozone layer with its threat of harmful ultraviolet radiation loss of reefs and wetlands,contamination of the air with emissions and the waters with pollutants and overpopulation . Discusses further the cause of the altered ecosystems namely:agriculture and industry and their hazardous effects to the earth and its populace.
870449109
Conservation of natural resources.
Environmental degradation
Environmentalism.
R GE 195 .C160 1994
