<span>Three anatomical features that birds share with their theropod ancestors are:
</span><span>1. they had light, hollow bones
</span>2. they rearranged hip and leg muscles because this of <span>improved bipedal movement
</span>3. they had their flight oriented with the use of wings for balance
Cells undergo mitosis because there must be a process in which the nucleus is divided in order for there to be a successful reproduction for cells.
The study of the lives of early human communities through the examination of their physical remains. Objects made by humans that are unearthed by archaeologists. ... The study of the earth, especially it's rock forms.
