Cover: © Getty Images/Niedring/Drentwett S. 10: A © iStock/Felix MAckel; B © fotolia/Carola Schubbel S. 11: A © Thinkstock/iStock/M.Levent ALBAS; B © iStock/Chris Futcher; C © iStock/GoodLifeStudio; D © Thinkstock/iStock/AndreyKaderov; E © Thinkstock/BananaStock; F © iStock/Purdue9394 S. 14: Ü3c alle, Ü4 alle © fotolia/WoGi S. 16: Hintergrund Wandzeitung © Thinkstock/iStock/Zakharova_Natalia S. 17: Ü5 beide © Anna Li, München Quellenverzeicnis Paul, Lisa & Co. Starter KB, ISBN 978-3-19-001559-7 © Hueber Verlag