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mario62 [17]
3 years ago
8

Dvd Credit card Stereo speaker Computer hard drive The listed devices all use which force? A) X rays B) magnetism C) electricity

D) ultra violet radiation
Biology
2 answers:
maria [59]3 years ago
3 0
B. Magnetism? That how headphones work so id imagine same principle.

Mekhanik [1.2K]3 years ago
3 0
I believe it is c because these electronic things need some sort of spark to work, but i am not entirely sure. I hope this helps :D
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In the example above 80 chickens have bare legs (ff)-recessive homozygous which means that the frequency of that genotype is 80/240+80=0.25 (q2), frequency of the recessive allele is\sqrt{0.25}=0.5. This means that the frequency of the dominant allele (p) is 1-0.5=0.5

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