Answer:
Darwin's main contribution to the theory of evolution was his theory of natural selection.
Explanation:
Natural selection is the phenomenon that some organisms from a particular population fit better into their environment, that is, are more likely to provide surviving offspring than less well-adapted organisms. The best adapted organisms will increasingly gain the upper hand within the population (survival of the fittest). It is thus one of the mechanisms of evolution. Mutations in, and recombinations of, the genetic material of the organisms cause the genetic variation in the population, allowing this selection.
They advocated for different parts of the state
<span>The
economist Julian Simon bet in 1980 that the prices of five free traded
commodities would decline in ten years. In 1990 Simon won this bet against
the neo-Malthusian Paul Ehrlich.</span>
Russia was called The Soviet Union in the past when they were communists
