1. | process by which populations of organisms with variations that help them survive in their environments live longer, compete better, and reproduce more than those that do not have the variations |
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2. | inherited trait that increases an organism's change of surviving and reproducing in its environment |
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3. | body parts of organisms that are similar in structure and position but different in function |
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4. | slight difference in an inherited trait of individual members of a species |
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5. | study of similarities and differences among structures of living things |
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6. | an adaptation that enables a species to blend in with its environment |
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7. | body parts that perform a similar function but differ in structure |
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8. | atoms of the same element that have different numbers of neutrons |
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9. | science of the development of embryos from fertilization to birth |
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10. | chart that divides the Earth's history into different time units |
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11. | body parts have lost their original function through evolution |
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12. | occurs when the last individual organism of a species dies |
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13. | a person who studies plants and animals by observing them |
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14. | change over time in populations of related organisms |
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15. | made up of all the fossils ever discovered on Earth |
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16. | breeding of organisms for desired characteristics |
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17. | preserved evidence of the activity of an organism |
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18. | resemblance of one species to another species |
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19. | a fossil copy of an organism in a rock |
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20. | impression of an organism in a rock |
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21. | to overcome by argument |
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