Sentence:  If we are part of nature, then we are synonymous with it at the metaphysical level, every bit as much as the first all-but-inorganic <WSD>animalcules</WSD> that ever formed a chain of themselves in the blow hole of a primordial sea vent. 
Meaning of the word marked with <WSD> tags:  A microscopic aquatic animal or protozoan. (from 17th c.)