Cengage Advantage Books: Sustaining the Earth 10th Edition by Tyler Miller,Scott Spoolman

تمرين 1

Review the Key Questions and Concepts for this chapter on p. 110. Distinguish among an old-growth forest, a second-growth forest, and a tree plantation. What major ecological and economic benefits do forests provide? Summarize the conclusions of scientists and economists who have attempted to put a price tag on the major ecological services provided by forests and other ecosystems.