div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imageimg data-url=document6-the-ridge-and-swale-topography-was-created-as-lake-michigan-levels-receded-fromhtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: · 6 The ridge and swale topography was created as Lake Michigan levels receded from its post-glacial high from about 12000 years ago to approximately 6000 years ago Jansen prefiled loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader033fdocumentsusreader033viewer20220604025f0e78877e708231d43f67d4html5thumbnails1jpg width=140 height=200 divdivdiv class=trans-pagebutton class=gotoPage data-page=2Page 2button div class=trans-imageimg data-url=document6-the-ridge-and-swale-topography-was-created-as-lake-michigan-levels-receded-fromhtmlpage=2 data-page=2 class=trans-thumb lazyload alt=Page 2: · 6 The ridge and swale topography was created as Lake Michigan levels receded from its post-glacial high from about 12000 years ago to approximately 6000 years ago Jansen prefiled loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader033fdocumentsusreader033viewer20220604025f0e78877e708231d43f67d4html5thumbnails2jpg width=140 height=200 divdivdiv class=trans-pagebutton class=gotoPage data-page=3Page 3button div class=trans-imageimg data-url=document6-the-ridge-and-swale-topography-was-created-as-lake-michigan-levels-receded-fromhtmlpage=3 data-page=3 class=trans-thumb lazyload alt=Page 3: · 6 The ridge and swale topography was created as Lake Michigan levels receded from its post-glacial high from about 12000 years ago to approximately 6000 years ago Jansen prefiled loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII=...