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Evolution Steps One
Living things produce more offspring than there are available resources
Evolution Steps Two
Thus, there is a struggle for distance - living things face a constant battle of survival
Evolution Steps Three
There exists variation of traits within a population or species. The individuals in a population/species vary in their phenotypes
Evolution Steps Four
This variation is inheritable; that is, it reflects variations in genotype = traits of parents passed on to offspring
Evolution Steps Five
Time, units = selection pressures could take thousands of years to play out