Environmental Science 15th Edition by Scott Spoolman,Tyler Miller

Exercise 13

What is the key concept for this section? What are the major environmental threats to national parks in the world and in the United States? Describe some of the ecological effects of reintroducing the gray wolf to Yellowstone National Park. What percentage of the world's land has been set aside and protected as nature reserves, and what percentage should be protected, according to conservation biologists? What is the buffer zone concept? How has Costa Rica applied this approach? What is wilderness and why is it important, according to conservation biologists? Summarize the history of wilderness protection in the United States.