Evolution by definition is the process of change in all forms of life over generations. The process is simple enough to understand in roughly 7 steps.
Step One:
A life form becomes numerous by reproducing.
Step Two:
The offspring is different from the parent in tiny, random ways by the means of changes in hereditary information of the organism.
Step Three:
If these changes are helpful, the offspring have a higher chance of living long enough to reproduce.
Step Four:
The life form may pass down their helpful change, and so further offspring have a higher chance of making more offspring than others without the helpful change.
Step Five:
More offspring = more helpful change in future generations.
Step Six:
Differences accumulate in the species' population.
Step Seven:
Over time population branches off as a new species.
This occurs in all life forms.
P.S: Please inform me if this description is flawed in any way.
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