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natural selection
Term | Definition |
---|---|
Species | Organisms that share most of the same traits (DNA) and can reproduce fertile offspring. |
Evolution | A change in a species over time. |
Variation | Differences within a species. |
Survival of the Fittest | Organisms best suited to the environment are more likely to survive. |
Fossil | Any remains or trace of past life. |
Sedimentary Rock | Rocks where fossils are often found. |
Extinct | When all members of a species have died. |
Endangered Species | Very FEW organisms of a species are left. At risk of becoming extinct. |
Mutation | Permanent change in DNA |
Environment | An organism's surroundings |
Adaptation | Anything that helps an organism survive in its environment |
Camouflage | Coloring that helps an organism blend into its environment |
Competition | When two or more organisms struggle for food, space and mates |
Resource | What an organism needs to survive. Ex: food, water, shelter |
Overpopulation | Too many of one species |