<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
It would be commensalism- a symbiotic relationship where one organism benefits while the other remains unaffected.
Explanation:
A university is building a new student center that is one third the distance from the arts center to the Academic.
