div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imagea href=https:reader040fdocumentsusreader040viewer20220305085ab7df747f8b9ac60e8c1b8ehtml5page1jpg target=_blank img data-url=documentclose-to-one-another-have-been-grouped-to-form-oactive-element-or-radioactivehtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: · PDF filepoints close to one another have been grouped to form oactive element or radioactive isotope of an they replace calcium atoms in the skeleton Beta particles loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader040fdocumentsusreader040viewer20220305085ab7df747f8b9ac60e8c1b8ehtml5thumbnails1jpg width=140 height=200 adivdivdiv class=trans-pagebutton class=gotoPage data-page=2Page 2button div class=trans-imagea href=https:reader040fdocumentsusreader040viewer20220305085ab7df747f8b9ac60e8c1b8ehtml5page2jpg target=_blank img data-url=documentclose-to-one-another-have-been-grouped-to-form-oactive-element-or-radioactivehtmlpage=2 data-page=2 class=trans-thumb lazyload alt=Page 2: · PDF filepoints close to one another have been grouped to form oactive element or radioactive isotope of an they replace calcium atoms in the skeleton Beta particles loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader040fdocumentsusreader040viewer20220305085ab7df747f8b9ac60e8c1b8ehtml5thumbnails2jpg width=140 height=200 adivdivdiv class=trans-pagebutton class=gotoPage data-page=3Page 3button div class=trans-imagea href=https:reader040fdocumentsusreader040viewer20220305085ab7df747f8b9ac60e8c1b8ehtml5page3jpg target=_blank img data-url=documentclose-to-one-another-have-been-grouped-to-form-oactive-element-or-radioactivehtmlpage=3 data-page=3 class=trans-thumb lazyload alt=Page 3: · PDF filepoints close to one another have been grouped to form...