Answer:
7. Adenine (A), nitrogenous bases
8. cytosine
9. nucleotides
10. purine
11. double helix
12. genetic material
13. single-ring
14. double-ring
15. nucleic acids
16. chromosome
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Answer:
The answer is Diffusion .
Explanation:
Diffusion is a net movement of molecules from a region of high concentration to a region of low concentration down a concentration gradient.
