D. Darwin's theory of natural selection shows that organisms evolve based on which one's survive the best and thrive.
The gastrocnemius muscle
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Answer:
Explanation: Bacteria and archaea are prokaryotes, while all other living organisms — protists, plants, animals and fungi — are eukaryotes. ... The vast majority of protists are unicellular or form colonies consisting of one or a couple of distinct kinds of cells, according to Simpson.