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I would have to say c I have learned this type of stuff in the past
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In double-stranded DNA, the molecular double-helix shape is formed by two linear sugar-phosphate backbones that run opposite each other and twist together in a helical shape. The sugar-phosphate backbone is negatively charged and hydrophilic, which allows the DNA backbone to form bonds with water.
Fruits with tiny hooks are most likely to be spread by animal hair.
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