What are some of the reasons for the development of parks and protected areas in and around U.S. cities?
What will be an ideal response?
First and most important, these areas keep ecological processes functioning by regulating climate, producing oxygen, and filtering out air and water pollutants. Second, parks have been created in and near cities to satisfy biophilia, our desire to be in contact with other organisms. A third reason we have set aside parks is for tranquility, enjoyment of lush greenery, and escape from the pollution and stress of the urban setting. A fourth reason for city parks (one of the earliest purposes) is as a pleasure ground for the wealthy, a place to relax. Fifth, many of the poverty-stricken immigrants who came to our cities wanted active recreation, as do modern city dwellers, places to play ball games, and needed open spaces to get away from overcrowded living conditions.
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________ determines the extent to which vertical motions will mix the pollution with cleaner air above surface layers
Fill in the blank(s) with correct word
The vast semiarid grasslands of Eastern Europe and Asia are known as
A) chaparral. B) selva. C) mattoral. D) steppe. E) tundra.
The "dirty dozen" POPs targeted by the Stockholm Convention include ________
A) DDT and PCBs B) BPA and radon C) Roundup and glyphosate D) Dr. Pepper and Mountain Dew E) Bt toxin and isopropyl alcohol
In which of the following areas is population growth at present most rapid?
A. the former Soviet Union B. Africa C. North America D. Europe