Explain why nucleic acids cannot be formed from sugars alone

with alcohols to form ester groups; with amines to form amide groups. Sugars. The sugars in DNA and RNA are penthouses.

stratosphere: as the altitude increases, the air temperature increases. the stratosphere has a layer of ozone, called the ozone layer. this layer absorbs most of the ultraviolet radiation from sunlight. this results in the stratosphere being warmer.