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I THIS CURIOUS WORLD j I 1 t 1 f. f Ci C 0 i X 0 J l Jt it j i r. r r- r a j IO OI 0 OIrY N 1 i eru x lN t- t y mE THE Ii Rr Ul SHAPED SHAPE AREAS i c w. w W x AI rY t 0 OJ D A AT THE t ti i a li MouTHS ocl s o p f R RI RS A Ar ARE r p if f 4 4 WY I 60 GO NAMED BECAUSE t Y t t tW Wt Cf RESEMBLANCE LANC t o V LJ z 10 a T tN H GREEK Eu n LETTER R v. v 1 iff Ji-f. Ji r rs DELTA J TA 7 F r. r I fu J s sa A r a ri f a aRr fJ Rr r r 5 T t L w av f PEAK MARABOU STANDS oF TODAY THE ALPS ALPS' Sow SOWE I S K j NORTHWARD FROM or cP AfRICA ORIGINAL loN M ARE SCAVENGERS rD roaS o of ROCK PUSHING AND WASH SLIDING OVER ONE ANOTHER R ALt All THEIR fooD HAVE CARRIED THE A U BEFoRE MG ALONG CREST w n t 9 1 It W c WC phi t-Hj Many mount mountains Ins originated curl curl- enough as depressions in the earths earth's crust These depressions were caused by sags or wrinkles in weakened weak ened sections of the crust Water Vater flowed into the low places and carried carried car car- ried deposits of sandstone clay and other materials Later on terrific pressure and consequent adjustments buckled up the soft soU rock formations into chains of ot mountains The Alps are believed to have risen from a n seaway seaway seaway sea sea- way four to seven times their present width Next How much of the earths earth's surface surface sur surface sur- sur face is desert |