(100 points) The model represents the change in the DNA content of a cell during the cell cycle.
Which part of the model represents the S phase?

2

Explanation:

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micro/nanoscale topography surface exhibits many prominent properties and is extensively employed in biomedical device, microfluidic device and energy device fabrication. additionally, the clinical applications of biomaterials can be largely expanded with of nanostructured surfaces.

i think that d. wind is the answer.   i missed the question when i answered a. currents.