For the answer to the question above,
<span>DNA is made up of two nucleotide strands. The nucleotides are connected together by covalent bonds within each strand. The sugar of one nucleotide forms a covalent bond with the phosphate group of another. The two strands themselves are connected by hydrogen bonds. The hydrogen bonds are found between the bases of the two strands of nucleotides. Adenine forms hydrogen bonds with thymine whereas guanine forms hydrogen bonds with cytosine. This is called complementary base pairing</span>
Ozone would be the secondary pollutant because it is caused when two primary pollutants react. Hope this helps!
Answer:
the population
Explanation:
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Answer:
away from
Explanation:
<em>Arteries carry blood to tissues</em>
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