Stack #213375
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| adaptation | When animals change behavior or appearance over time in response to environment.
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| natural selection | Process in which individuals that are better adapted to their environment survive and reproduce more successfully than others do.
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| Why can many insects adapt quickly to insecticides? | The insects generation time is short.
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| What evidence of natural selection is available today that was not available to Darwin? | Differences in genes create variation.
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| Evolution | The process by which populations slowly change over time.
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| speciation | A process that begins when a portion of a population becomes physically or geographically isolated.
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| trait | A specific characteristic that can be passed from parent to offspring.
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| What process would farmers use to produce vegetation that will grow in a specific climate? | selective breeding
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| selection | When certain genes make organisms more likely to survive and reproduce.
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| If two organisms have similar traits and DNA, they probably share a what? | ancestor
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| fossil | The remains or imprint of a once-living organism found in layers of rock.
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| Populations are limited by what? | starvation, disease, competition, and predation
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| What are the four parts of natural selection? | overproduction, inherited variation, struggle to survive, and successful reproduction.
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| speciation | Process of separation, adaptation, and division.
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| species | A group of organisms that can mate with one another to produce fertile offspring
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| fossil record | A timeline of life provided by the remains of imprints of dead organisms.
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| whales | Modern ocean-dwelling mammals that are descended from ancient land-dwelling mammals.
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| Charles Darwin | A naturalist who proposed that evolution happens through natural selection.
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| population | Grpups of individuals of the same species living in the same place.
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| genetics | Modern knowledege that helps explain Darwin's theory.
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| Darwin could not answer all of the questions regarding his new theory because he did not know about what? | genetics
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| inherited variation | When an organism's offspring is not identical to it.
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| Minerals seeping inot an organism's remains forms what? | fossils
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| Why is the Earth's fossil record incomplete? | Specific conditions are required for fossils to form.
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| What evidence supports the theory that whales evolved from land-based mammals? | Unused hip bones, whales are mammals, and the fossil record.
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