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| The comparison of the body structures of different organisms |
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| Similar structures that related species have inherited from a common ancestor |
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| A hollow area in sediment in the shape of an organism or part of an organism (a fossil) |
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| A solid copy of the shape of an organism. It is the opposite of a mold. (a fossil) |
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| Fossils in which minerals replace all or part of an organism. Over millions of years, the minerals harden into rock. |
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| Sceintists who study fossils (Ross) |
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| Evolution occurs slowly but gradually. Tiny changes add up to major changes over a long time. |
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| Species evolve quickly during relatively short periods. Big changes quickly followed by little change for long periods of time |
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| Interenal skeleton with backbone (fish, amphibians, reptiles, birds, & mammels) |
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| provide evidence of the activities of ancient organisms (like a footprint) |
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| Name 4 pieces of evidence supports the theory of evolution? |
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Definition
- Similar body structures
- patterns of early development
- molecular structure
- fossils
These all provide evidence that organisms change over time - also known as ____.
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Definition
An animal dies. Its body is gradually covered by sediments (like at the bottom of a lake). Sediments harden into rock over millions of years.
Also organisms can be trapped in tar, amber or ice.
These are examples of ____. |
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| What do scientist learn from fossils? |
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Definition
| The ______ record provides evidence about the history of life and past environments on earth. Fossils can help scientists study the rate of evolution. |
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| What are 3 ways a fossil can be preserved with little change or damage? |
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Definition
Caught in tar, amber or ice.
These are examples of... |
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| Identify 5 types of fossils |
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Definition
- molds
- casts
- petrified
- trace
- preserved remains
These are all examples of...
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| What are sediments? How are they involved in the formation of fossils? |
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Definition
| ______ are particles of soil and rock. They are deposited on top of a dead organism and can eventually create a mold, cast, or petrified ____. |
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