1. Explain how biological evolution is supported by the fossil record. 2. Why is natural selection a mechanism for biological change?
3. How does chemical evolution explain the origin of life on Earth?
4. Explain why scientific theories, such as biological and chemical evolution, represent the strongest explanation of the changes observed in the fossil record.
5. How can scientific theories on evolution and the fossil record change over time?
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Explanation:

● Fossils are important evidence for evolution because they show that life on earth was once different from life found on earth today. Paleontologists can determine the age of fossils using methods like radiometric dating and categorize them to determine the evolutionary relationships between organisms.● The mechanism that Darwin proposed for evolution is natural selection. Because resources are limited in nature, organisms with heritable traits that favor survival and reproduction will tend to leave more offspring than their peers, causing the traits to increase in frequency over generations.● A third theory of life's origin is known as chemical evolution. In this idea, pre-biological changes slowly transform simple atoms and molecules into the more complex chemicals needed to produce life. This modern theory then suggests that life originated on Earth by means of a rather slow evolution of nonliving matter.● Fossils provide evidence that organisms that were found before are not the same ones that are found today. Fossils show the progression in Evolution. Biological and chemical evolution is the means of comparing the anatomies of both the extinct and modern species.● Evidence in the form of the fossil record, geological formations, and genetics attest to change having taken place and give clues to how evolution works. ... It is important to remember that Earth itself contains evidence of life in the past, and that this evidence provides critical support for the theory of evolution.

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