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If humans had been present to build log structures during the Carboniferous period (they weren't), which plant type(s) would have been suitable sources of logs? A) horsetails and bryophytes B) charophytes, bryophytes, and gymnosperms C) lycophytes and bryophytes D) whisk ferns and epiphytes E) ferns, horsetails, and lycophytes

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Category:- Biology
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