What do tomatoes and potatoes share in common? both are tubers

both are fruits

both are related to nightshade

both must be cooked

Both are related to the nightshade plant.

Explanation:

✿   this landform has a high elevation and a high relief

✿   this landform is a mountain

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.