please answer them fast
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Answered by
3
Answer:
14. nephrons
15.nitrogen
16. symbionts
17. white blood cells
18. all of them are irreversible
Answered by
4
Answer:
xiv) {a} nephrons
xv {a} nitrogen
xvi {a} autotrophs
xvii {b} W. B. C
xviii {c} rusting of iron
Explanation:
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