]which of these provides the best evidence for the plate tectonic theory? the rise of magma by the convergence of earth plates the destruction of earth's magnetic field by the rotation of earth's core the variations in the age of rocks at different distances from the midocean ridges the difference in the shapes of the atlantic ridge and the coastlines of continents

The difference in shapes of the Atlantic Ridge and the coastlines of continents

Explanation:

Earths magnetic field can not be destroyed so that option is wrong. The variations of the age of the rocks does not deal with the Plate Tectonic Theory. The rise of magma can not effect the plate tectonics. So that leaves the other option which is correct.

the answer would be d

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.