What do the statistics say about American national parks？ 2. What is the purpose of a recreation area and that of a national park？ 3. Whose effort is it that contributes directly to the protection of national parks from the exploitation of business interests？ 4. Why were lumberjacks so angry about park conservation efforts？ 5. What does the “Land of the Free” mean？ 6. What is the Yellowstone National Park most famous for？ 7. Give at least two examples to show that work has been done to keep American national parks as natural as possible. 8. Why are strict rules imposed which prohibit tourists from feeding animals with cookies and candy？