<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
Answer:
Competition between two species happens when both species are using the same resources in an area. This usually happens when a new species moves into the area of the current species. Competition leads to both species being harmed.
Hope this helps! :)
