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Blood has traveled from the heart to the toes. which describes the next step of the circulation process?

Why do oceanic plates tend to subduction when colliding with a continental plate

Plant species a has a diploid number of 12. plant species b has a diploid number of 16. a new species, c, arises as an allopolyploid from a and b. the diploid number for species c would probably be a) 12. b) 14. c) 16. d) 28. e) 56.