B. Mutations
Mutations are basically any changes in DNA, and they can affect some of an individual’s traits.
Since every individual has mutations, the finches are bound to be a bit different from each other biologically, but they will still MOSTLY look similar and behave in similar ways.
Many immigrants from Europe began working in factories and producing goods used by people in the North. Many factories began producing textiles (cloth) with the cotton grown in the South. The economy of the South was based on agriculture.
Answer:
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The correct answer is b . chaos
Answer:
Xiongnu, Jie, Qiang and Di.