Explain the importance of fossils in deciding evolutionary relationships.
Fossils are the remains or impression preserved of prehistoric plant or animal embedded in rock. Fossils provide us with the knowledge of animals and plants that lived hundreds of years ago which are now extinct. It helps us to compare the animals that lived during prehistoric times with its present descendants. They provide the missing link in the study of evolution. They are helpful in providing information while forming a sequence of the organisms in the pathway of evolution.