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Sliva [168]
3 years ago
6

PLS HELP ASAP!!!!!

Biology
2 answers:
Juliette [100K]3 years ago
7 0
The answer is:  [D]:  "Protons are fixed in the nucleus."
____________________________________________________
Zina [86]3 years ago
5 0
The answer is the fourth one.
Protons are fixed in the nucleus
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