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15 Cards in this Set
- Front
- Back
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Mold |
A hollow area in the shape of an organism or part of an organism |
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Cast |
A solid copy of the shape of an organism |
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Petrified fossils |
Fossils in which minerals replace all or part of an organism |
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Carbon film |
An extremly thin coating of carbon on rock. |
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Trace fossils |
Provide evidence of the activities of ancient organisms |
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Paleontologists |
Scientists who study fossils |
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Evolution |
The change in living things over time |
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Extinct |
An organism that no longer exists and will never live again on Earth |
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Species |
A group of similar organsims that can mate with each other and create fertile offspring |
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Fossil |
Preserved remains or traces of an organism that lived in the past |
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Adaptation |
A trait that increases an organism's ability to survive and reproduce |
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Scientific theory |
A well-tested concept that explains a wide range of observations |
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Natural selection |
The process by which individuals with better adaptations are more likely to survive and reproduce. |
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Variation |
Any difference between individuals of the same species |
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Homologous structures |
Similar structures that related species have inherited from a common ancestor |
