Natural selection - Organisms with the most beneficial traits are more likely to survive and reproduce., Evolution - the gradual change over time, Charles Darwin - a scientist created the theory that evolution happens by natural selection, Offspring - Another word for an animal's young ('children'). , Traits - Characteristics, like hair and eye color, that are passed on to offspring. , Extinction - the dying out of a species, Fossils  - remains or imprints of a once living organisms found in rock layers, Lamarck - Scientist who believed characteristics inherited during organisms lifetime were passed on, Adaptation - A trait that helps an organism survive and reproduce, Radiometric dating - determining the age of a fossil based on how much radioactive material it contains, Relative dating - determining if one rock/layer is older or younger than another, without knowing their specific age,

YT Evolution ESL

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