Here are a few links to try :
khan evolution article
Tuesday, February 27, 2018
Evidence for Evolution
We have read that the fossil record is evidence for evolution. Is that all there is or is there more that shows us that organisms change over time? What other evidence is there for evolution. Do some research about this and post your answers.
Here are a few links to try :
khan evolution article
Here are a few links to try :
khan evolution article
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Anatomy - Species may share similar physical features because the feature was present in a common ancestor (homologous structures).
Molecular biology - 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 the evolution and geological change.
Fossils. Fossils document the existence of now-extinct past species that are related to present-day species.
Direct observation. We can directly observe small-scale evolution in organisms with short lifecycles (e.g., pesticide-resistant insects).
Fossils. Fossils document the existence of now-extinct past species that are related to present-day species.
Direct observation. We can directly observe small-scale evolution in organisms with short lifecycles (e.g., pesticide-resistant insects).
-Elliot
Through the global features of the Earth we can find that organisms have similar traits to organisms that are on a different continent. This because of the continental drift. This is another scientists know that evolution is true.
Through the global features of the planet earth we can find that organisms have similar traits to other organisms that are on different continents. This is because of the continental drift. This is another reason why scientist know evolution is true.
Direct observation. We can directly observe small-scale evolution in organisms with short lifestyles. This shows more evidence of organisms changing over time.
Evidence for evolution comes from many different areas of biology:
Anatomy. Species may share similar physical features because the feature was present in a common ancestor (homologous structures).
Molecular biology. 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.
Fossils. Fossils document the existence of now-extinct past species that are related to present-day species.
Direct observation. We can directly observe small-scale evolution in organisms with short lifecycles (e.g., pesticide-resistant insects).
DNA and the genetic code reflect the shared ancestry of life. DNA comparisons can show how related species are.
There is other things to tell us that things change over time like Darwin's research in the Galapagos islands on finches.
DNA, fossils, and Charles Darwin's observation are how we know that evolution is a thing. DNA leads back to old ancestors that were like this certain animal. Fossils show us older versions of the animal. Lastly, Charles Darwin's observation showed that he saw evolution because the birds he was observing changed.
Fossils are one way to show that evolution exists, fossils are an example of living species that used to exists but are now extinct. Another way that it is proven that evolution exists is Darwin's belief that things evolve over time.
Scientists have found fossils that prove that other species lived a long time ago according to how old the bones are. Also all of the theories that have similar facts lead up to believing evolution exists.
There are fossils from millions of years ago that prove there were other species.
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