Evolution explains how living things are changing today and how modern living things have descended from ancient life forms that no longer exist on Earth. As living things evolve, they generally become better suited for their environment. This is because they evolve adaptations.
Explain how fossil records, comparative anatomy, and genetic information provides evidence for evolution.
Explain how fossil records, comparative anatomy, and genetic information provides evidence for evolution.
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Fossil records provide a chronological timeline of the evolution of life on Earth. Fossil evidence shows that species have changed over time, with new species emerging and old species disappearing. This provides clear evidence that evolution has occurred, as species have changed over time to become better suited to their environment.
Comparative anatomy is the study of the physical structure of different species. It provides evidence for evolution by revealing similarities between species, showing that they have a common ancestry. For example, the similarities in the skeletal structure of the limbs of humans, birds, and reptiles suggest that they all evolved from a common ancestor that lived in the past.
Genetic information provides further evidence for evolution by showing the relationships between species. By comparing the genetic sequences of different species, scientists can determine the similarities and differences in their genetic material, revealing the evolutionary relationships between species. For example, humans and chimpanzees share 99% of their genetic material, indicating that they are closely related and evolved from a common ancestor.