Fossil Record and Evolution
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| Evolution | Change in heritable traits over successive generations.
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| Law of Superposition | The principle that sedimentary rock layers are older than the rock layers that are above it and younger than the rock layers below it.
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| Ontogeny | The development of a species through its life cycle
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| Phylogeny | The relationship of a species through a common ancestor.
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| Fossil | Any preserved evidence of a past geologic age; usually found in sedimentary rock.
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| Index Fossil | A fossil used to determine the age of a rock layer.
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| Cladogram | A diagram that shows relationships between species.
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| Common Ancestor | An ancestor that is shared by two or more organisms.
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| Relative Age | The age of an object in relation to the ages of other objects.
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| Absolute Age | The numeric age of an object or event, often found by using radiometric dating.
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| Embryos that have a closer related form means.... | they share a more recent common ancestor.
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| In closer related forms, the earlier stages of embryos are... | more similar than later stages.
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| Fossils can provide evidence of.... | past climates, past ecosystems, past behaviors, mountain building, and past biodiversity.
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| The shape of fossil leaves can tell us of.... | past climate.
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| Percentage of species that have gone extinct. | Over 90 %
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| Finding reef fossils in the desert provide what type of evidence? | The area was once covered by an ocean.
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| What can pollen fossils tell us about the past? | The type of plants that lived there.
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| Extinction | When a species dies off from the earth.
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| Ernst Haeckel | Biologist and artist whose drawings show a commonality in embryology.
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| Embryology | The study of embryos and their development.
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