Darwin's discovery of natural selection is considered a scientific theory rather than a fact or hypothesis. A theory in science is an explanation or model supported by evidence from observation and experimentation. The Theory of Natural Selection proposes that species evolve over generations as favorable inherited traits become more common through the process of survival of the fittest. Darwin initially proposed natural selection as a hypothesis, or educated guess, but it is now accepted as a scientific theory that best explains how evolution by natural selection occurs.
3. Fact Websters dictionary defines a fact as: something that has actual existence space exploration is now a fact
4. Fact The Gray Whale has evolved, through natural selection, into what it is today
5. Scientific Theory As used in science, a scientific theory is an explanation or model based on observation and experimentation
6. The Theory of Natural Selection the process in which favorable inherited traits become more common each generation
7. Hypothesis a suggested explanation for a phenomenon or a reasoned proposal suggesting a possible correlation between multiple phenomena (an educated guess)
8. Darwin’s Hypothesis “ Species originated by means of natural selection, or through the preservation of the favoured races in the struggle for life."
