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tpo 1 
passage 1 groundwater1 
passage 2 the origins of theater3 
passage 3 timberline vegetation on mountains6  

tpo 29 
passage 1 the origins of cetaceans9 
passage 2 the desert formation11 
passage 3 early cinema13  

tpo 316 
passage 1 architecture16 
passage 2 depletion of the ogallala aquifer18 
passage 3 the longterm stability of ecosystem21  

tpo 424 
passage 1 deer populations of the puget sound24 
passage 2 cave art in europe26 
passage 3 petroleum resources28  

tpo 531 
passage 1 minerals and plants31 
passage 2 the origin of the pacific island people33 
passage 3 the cambrian explosion35  

tpo 637 
passage 1 powering the industrial revolution37 
passage 2 william smith39 
passage 3 infantile amnesia40  

tpo 743 
passage 1 the geologic history of mediterranean43 
passage 2 ancient rome and greece45 
passage 3 agriculture, iron, the bantu people47  

tpo 849 
passage 1 the rise of teotihuac¨¢n49 
passage 2 extinction of the dinosaurs51 
passage 3 running water on mars53  

tpo 955 
passage 1 colonizing the americas via the northwest coast55 
passage 2 reflection in teaching56 
passage 3 the arrival of plant life in hawaii58  

tpo 1061 
passage 1 chinese pottery61 
passage 2 variations in the climate63 
passage 3 seventeenthcentury european economic growth65  

tpo 1168 
passage 1 ancient egyptian sculpture68 
passage 2 orientation and navigation70 
passage 3 begging by nestlings72  

tpo 1274 
passage 1 which hand did they use?74 
passage 2 transition to sound in film76 
passage 3 water in the desert78  

tpo 1380 
passage 1 types of social groups80 
passage 2 biological clocks82 
passage 3 methods of studying infant perception84  

tpo 1486 
passage 1 children and advertising86 
passage 2 maya water problems88 
passage 3 pastoralism in ancient inner eurasia89  

tpo 1592 
passage 1 a warmblooded turtle92 
passage 2 mass extinctions93 
passage 3 glacier formation95  

tpo 1698 
passage 1 trade and the ancient middle east98 
passage 2 development of the periodic table100 
passage 3 planets in our solar system101  

tpo 17104 
passage 1 europes early sea trade with asia104 
passage 2 animal signals in the rain forest106 
passage 3 symbiotic relationships107  

tpo 18110 
passage 1 [wb]industrialization in the netherlands and  [dw]scandinavia110 
passage 2 the mystery of yawning112 
passage 3 lightning113  

tpo 19115 
passage 1 the roman armys impact on britain115 
passage 2 succession, climax, and ecosystems117 
passage 3 discovering the ice ages120  

tpo 20122 
passage 1 westward migration122 
passage 2 early settlements in the southwest asia124 
passage 3 fossil preservation126  

¸½Â¼1 È«Êé´Ê»ã×ܱí129 

¸½Â¼2 140µÀ¾­µä´Ê»ãÌâ163