Describe an example of how humans used selective breeding in plants, and explain how that has benefited us

Which supports the idea that birds and butterflies both have wings but they do not have a common ancestor with wings? a. the wings are analogous structures that evolved differently and do not have a similar internal structure. b. the wings are homologous structures that evolved differently and do not have a similar internal structure. c. wings of birds are vestigial structures, but the wing structures of bats are not vestigial. d. wings of bats are vestigial structures, but the wing structures of birds are not vestigial

Identify a specific example for each type of technology

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom