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klasskru [66]
3 years ago
13

Help need not good at his

Biology
2 answers:
pentagon [3]3 years ago
7 0

Answer:

C) period

Explanation:

Groups are columns on the periodic table (with the same number of electrons on the outer shell of the elements), whereas periods are rows (increasing in atomic number by 1 - 5, 6, 7, 8, 9 etc.)

natta225 [31]3 years ago
5 0

Answer:

i lwike mwathe hehe

Explanation:

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