Which supports the idea that birds and butterflies both have wings but they do not have a common ancestor with wings?

Birds and butterflies don't have a common ancestor because one is a member of a insect and the other is well a bird. They both have different body structure. One has bones and the other has an exoskeleton. hope this helps  

identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.v

any abiotic or biotic factor in an ecosystem that causes a population's size to slow or decrease is a limiting factor.