Internal and external hydrogen bonds<span> stabilize the </span>DNA<span> molecule. The two strands of</span>DNA<span> stay together by H </span>bonds<span> that occur between complementary nucleotide base pairs. Two </span>hydrogen bonds<span> occur between the adenosine and the thymine base pairs, and between the cytosine and the guanine there are three.</span>
Answer:
Active transportation
Explanation:
Active transportation is happening because energy is need to pump against the gradient. Whenever energy is used the transportation is active.
They were imported from China into the United States in 1881.
The first successful release was in Minnesota in 1916.
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Answer:
The baby is a girl.
Explanation:
All girls have 2 X chromosomes
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