explain the importance of fossil in deciding evolutionary relationships
Answers
Fossils are the remains of the organisms which died millions of years ago. They help us to find the evolutionary links of different species. 1- The fossils closer to earth surface are complex than the ones found in the bottoms that shows the evolution of species in different time periods.
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Fossils and their study is useful to know about the species which are no longer alive. They provide evidence and missing links between two classes. They are helpful in forming a sequence of organisms in the pathway of evolution. For example, a fossil bird known as Archeopteryx looks like a bird but it has many different features which resemble to reptiles. Archeopteryx has wings like bird but teeth and tails like of reptiles. Therefore, the fossil bird is a link between the reptiles and the bird. Thus, fossils have importance in deciding evolutionary relationships.