Atheory is accepted by scientists when a. it becomes a law b. it can be shown with a model c. it describes how nature works d. it is supported by adequate data

The correct answer is option d. it is supported by adequate data.

Explanation:

A theory is a well tested and well-substantiated explanation that tells about any natural phenomenon or how something work which is tested and supported over a period of time repeatedly.

The theory should be based on adequate data and experiments repeatedly for a long time by many individual experiments.

Thus, the correct answer is option D- it is supported by adequate data.

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.

your answer is going to be physical weathering