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insulin is a hormone humans have to regulate glucose levels in the blood. this is called internal feedback .individuals that do not have the ability to control their insulin level (diabetes) will:
a. be unable to maintain homeostasis
b. be able to maintain homeostasis
c. be able to eat more sugar
d. migrate to new environment

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides

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some scientists like gregory adcock agree with thorne's theory of regional continuity.

others, like chris stringer and ian tattersall, believe thorne's results may be contaminated or misinterpreted.