Science Vocabulary Unit F
Unit F vocabulary! Don't fail!
Terms
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- competition
- The struggle between organism for limited resources necessary for survival. (food, water, shelter, living spaces)
- fossil record
- The million of fossils that scientist have collected.
- fossil
- The preserved remains or traces of an organism that lives in the past
- adaptation
- A characteristic that helps an organism survive in its enviorment or reproduce.
- endangered species
- A species of animal or plant threatened with extinction
- paleontologist
- A scientist who studies fossils to learn about organisms that lived long ago
- geological time scale
- A record of the geological events and life form in Earth's history
- species
- A group of similar organisms that can mate with each other and produce offspring
- stratigraphic colmn
- A diagram representing a series of rock layers.
- law of superposition
- The geological principle that states that horizontal layers of sedimentary rock, each layer is older than the layer above it and younger than the layer below it.
- evolution
- The gradual change in a species over time.
- natural selection
- The process by which individuals are better adapted to their enviorment are more likely to survive and reproduce than other members of the same species.
- variation
- Any difference between individual of the same species.
- extinct
- A species that does not have any living members
- mutation
- Can be good, bad, or have no effect. They are good when they create a random new variation of a trait that makes the organisms better adapted to its enviorment, more able to find food or more likely to mate. Create a variety. Variety allows for natural selection to occur.