Answer:
fossil and DNA
Step-by-step explanation:
Fossils are the most direct way that we can see the past history of life on Earth. Traditional study of evolution using fossils consists mostly of comparing the skeletons of fossil organisms to the skeletons of extant organisms.
DNA and the genetic code reflect the shared ancestry of life. DNA comparisons can show how related species are. Biogeography. The global distribution of organisms and the unique features of island species reflect evolution and geological change.