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Why do water-dwelling animals have thicker bones than land-dwelling animals?
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- If bleached human bones found lying in the desert were carefully examined, would osteons be present? How about osteocytes and a marrow cavity?Among other bones, the axial skeleton includes the_____. a. thoracic cage and vertebral column b. thoracic cage and pectoral girdle c. skull and pelvic girdle d. pectoral and pelvic girdlesWhy do adult humans have tail bones? 
