Examlex
Mercury's magnetic field is generated by the same dynamo effect as Earth's.
Survival of the Fittest
A concept derived from Darwinian evolutionary theory, it refers to the mechanism of natural selection where individuals better adapted to their environment tend to survive and produce more offspring.
Evolution
A process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth.
Progressive Change
Gradual transformation or development over time in a specific, usually forward or beneficial, direction.
Phrenology
A now-discredited theory that suggested the bumps on the skull could predict mental traits or character.
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