What role does nitrogenous bases have in dna and rna

As global warming continues the ocean absorbs more of the earth's heat what term describes the ocean as a storage location for heat a) heat binb) heat sinkc) heat storaged) heat vent( answer this for me)

If a cell's main function is to produce proteins to be excreted, which organelles would you expect to be larger

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?