Atoms of what element from the backbone of large, complex molecules such as sugars and fats? a.) oxygen b.) sulfur c.) sodium d.) carbon

b

Explanation:

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igneous rock formed from below the surface would have more crystals because

answer: because magma cools more slowly than lava

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.