Question 2:Which definition best describes gene flow? A. A random change in allele frequency
B. Movement of alleles between populations
C. The best adapted are able to survive and reproduce
D. A random change in nucleotide

B. Movement of alleles between populations

Explanation:

a adaptation is when organism changes itself to fit the environment

ex. when its cold outside i wear a jacket

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answer; i believe that the correct answer is (lung);