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Biology I: Evolution 18-19

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Across
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Age of Earth
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When the entire population of a species dies off
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When an animal copies or mimics the form of something else
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LUCA for teeth
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Differences between organisms of the same species
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The number of years it takes for half of a radioactive chemical to turn into a stable chemcial
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The variety of species on Earth
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Physical characteristic that demonstrates how certain species are related through a common ancestor
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Change in species over time
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Historical record provided by fossils
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Type of rock where fossils are commonly found
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Predator/prey relationship where one evolves in response to changes in the other
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Type of camouflage when an animal blends in with its background
Down
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Acronym for the first living thing that was the ancestor to all creatures
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Period of geologic time when most organisms were soft-bodied and did not make many fossils
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Discovered traits were inherited from parents
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Organism that exhibits traits common to both an ancestral group and its descendants
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Factor affecting natural selection where different species fight over resources
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A behavior or physical characteristic that allows an organism to survive and reproduce in its environment
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Drives evolution, fittest organisms survive
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Type of camouflage when a pattern like stripes or spots is used to confuse other organisms
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Change in the DNA of an organism
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Gap in the fossil record