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Species SpecificPlay
The sacs in different species can have specialized functions, so provide context. SlideBirds use air sacs to assist with breathing, unlike mammals.
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Animal and Plant UsePlay
Indicate when a sac is part of a plant's or an animal's biology to avoid ambiguity. SlideThe seed sacs in the flower pod burst open, scattering seeds everywhere.
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Technical VocabularyPlay
Use 'sac' in contexts related to biology or anatomy to show its technical nature. SlideDuring the dissection, we examined the ink sac of the squid.