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4
|
A diagram that shows how scientists think different groups in organisms are related.
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6
|
Body parts that are structurally similar in related species.
|
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7
|
A well-tested concept that explains a wide range of observations.
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8
|
The preserved remains or traces of an organism that lived in the past.
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9
|
A process in which individuals that are better adapted to their environment are more likely to survive and reproduce than others of the same species.
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10
|
A scientist who studies fossils.
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12
|
The comparison of the structures of different organisms.
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13
|
The process of grouping things based on their similarities.
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14
|
The gradual change in a species over time.
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15
|
The struggle among organisms, both of the same and of different species, for food, space, and other vital requirements.
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1
|
A behavior or physical characteristic that allows an organism to survive or reproduce in its enviroment.
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2
|
The disappearance of all members of a species from Earth.
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3
|
A group of organisms that are physically similar and can mate with each each other and produce offspring that can also mate and reproduce.
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4
|
The system for naming organisms in which each organism is given a unique, two-part scientific name.
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|
5
|
A classification grouping that consists of a number of similar, closely related species.
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11
|
Any differences between individuals of the same species.
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