Answer:
The correct answer would be D. species.
Natural taxon refers to the group of organisms which exists in nature as a consequence of evolution.
In Linnaeus's system, the only natural taxon is "species".
Species refers to the group of organisms in which two organisms of opposite or appropriate genders can produce a viable offspring.
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Lamarck's hypothesis of evolution was based on the theory of acquired inheritance.
20 is the Number of Neutrons of potassium.
