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Term Natural selection
Definition

Mechanism of evolution that establishes that the organisms that are best adapted to a particular environment will successfully reproduce through the slow accumulation of favorable genetic changes in their population over generations, thereby displacing the less-adapted organisms. When natural selection occurs over an extremely large number of generations, it may lead to the formation of a new species.

The theory of evolution by natural selection was first postulated by Charles Darwin in his seminal work, The Origin of Species, published in 1859, although it wasn’t until the 1930s that it became the primary explanation of the evolutionary process.

See evolution.


Topic  BiodiversityEnvironmental education