D) The basic unit of structure and function in all living things
Answer:
Five types of evidence for evolution are discussed in this section: ancient organism remains, fossil layers, similarities among organisms alive today, similarities in DNA, and similarities of embryos. You have read that Darwin collected many specimens of fossils on his trip. These specimens provided evidence that species existing in the past were very similar to species living during Darwin's time.
This answer should be correct
The adaptation that viceroy butterflies use is successful because it is so well adapted for the environment that it has evolved in.The ability of this butterfly to adapt to it environment has helped it survive in long term.But because the viceroy has been so successful it might also have come to a coast