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Cover Photo Credits
First Row (left to right): Female Korean factory worker: Image Source/Getty Images; Market food: Izzy Schwartz/Getty Images; High gas prices in Fremont, California: Mpiotti/Getty Images
Second Row: Red sports car: Shutterstock; View of smoking coal power plant: iStockphoto/Thinkstock; Lab technician using microscope: Jim Arbogast/Getty Images
Third Row: Lightbulbs in box: © fStop/Alamy; Market food: Izzy Schwartz/Getty Images
Fourth Row: Set of colored flags of many nations of the world: © FC_Italy/Alamy; Stack of cargo containers at sunrise in an intermodal yard: Shutterstock; Depression era photo of man holding sign: The Image Works
Fifth Row: Stock market quotes from a computer screen: Stephen VanHorn/Shutterstock; Portrait of a college student on campus: pkchai/Shutterstock; Peaches: Stockbyte/Photodisc
Sixth Row: Rear view of people window shopping: Thinkstock; Power plant pipes: Corbis; Power lines: Brand X Pictures; Three students taking a test: © Royalty-
Seventh Row: Woman from the Sacred Valley of the Incas: hadynyah/Getty Images; Paint buckets with various colored paint, Shutterstock; Close up of hands, woman using her cell phone: Shutterstock; Paper money: Shutterstock
Eighth Row: Cows: Stockbyte/Photodisc; Wind turbine farm over sunset: Ted Nad/Shutterstock; Wall Street sign: Thinkstock; Busy shopping street Center Gai, Shibuya, Tokyo: Tom Bonaventure/Photographer’s Choice RF/Getty Images; Paper money: Shutterstock
Ninth/Tenth Row: Waiter in Panjim: Steven Miric/Getty Images; Group of friends carrying shopping bags on city street: Monkey Business asset/img_ch100/Shutterstock; Set of colored flags of many nations of the world: © FC_Italy/Alamy; Soy bean field: Fotokostic/Shutterstock; Drilling rig workers: iStockphoto; Tropical fish and hard corals in the Red Sea, Egypt: Vlad61/Shutterstock; Modern train on platform: Shutterstock
Eleventh/Twelfth Row: Paper money: Shutterstock; View of smoking coal power plant: iStockphoto/Thinkstock; Welder: Tristan Savatier/Getty Images; Container ship: EvrenKalinbacak/Shutterstock; Market food: Izzy Schwartz/Getty Images; Modern train on platform: Shutterstock
Thirteenth Row: Printing U.S. dollar banknotes: Thinkstock
Back Cover Photo: Professor giving a lecture: Izabela Habur/iStockphoto