Answer:
the double helix of dna is, like its name, implies, in the shape of a helix which is essentially a three-dimensional spiral. the double comes from the fact that the helix is made of two long strands of dna that are intertwined—sort of like a twisted ladder.
Explanation:
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it allows plants to survive and continue to reproduce
<span>To generate all of the energy for the cell, store substances such as food, water, and wastes, and engulf pathogens that have invaded the cell.</span>