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Talja [164]
3 years ago
9

HELP. I need help bad please.

Biology
1 answer:
exis [7]3 years ago
5 0
14. Dermis

15. Chemical

17. Virus

18. Antibodies

19. Gas exchange

20. Ligament

Hope this helps!
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h2o is water  and c2o is carbon  dioxide :)

Hope I was help :D

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