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natulia [17]
3 years ago
13

How many groups are in the modem periodic table

Biology
1 answer:
sweet [91]3 years ago
7 0

Answer:

The correct answer is

18

Groups of the periodic table: The s-, p-, and d-block elements of the periodic table are arranged into 18 numbered columns, or groups.

Hope this helps!

- Quinn <3

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Mutations in a gene occur at a rate of one nucleotide every 10 million years. The gene sequence differs by 6 nucleotides between
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Answer:

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Total time split from a common ancestor = [Rate one nucleotide / Number of organism]Number of nucleotide

Total time split from a common ancestor = [10 million / 2] 6

Total time split from a common ancestor = [5 million] 6

Total time split from a common ancestor = 30 million

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