Answer:
C
new combinations means variations, and the more the variations there is of a species, the more diverse they are
Answer:
deoxyribose
Explanation:
A phosphate backbone is the portion of the DNA double helix that provides structural support to the molecule. DNA consists of two strands that wind around each other like a twisted ladder. Each strand has a backbone made of alternating sugar (deoxyribose) and phosphate groups.
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The largest natural population of organisms that can interbreed to produce fertile offspring are species.
