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Use "obligately" in a sentence
"It was actually great good luck that the green fluorescent protein from jellyfish was not nearly as obligately multimeric as the corals were."
"The 1st one is by Labandeira & Beall 1990:...we consider a "terrestrial organism" to be one that is obligately adapted to land; facultative behavioral adaptation of marine arthropods to a land-based existence is technically excluded..."
"One way in which we might express this is by saying that organisms serve as a locus of control, a source of their own agency, in a way in which neither non-living things nor obligately-dependent living things do."