DNA (deoxyribonucleic acid) and RNA (ribonucleic acid) are polymers of nucleotides linked in a chain through phosphodiester bonds. In biological systems, they serve as information-carrying molecules or, in the case of some RNA molecules, catalysts.NA (deoxyribonucleic acid) and RNA (ribonucleic acid) are polymers of nucleotides linked in a chain through phosphodiester bonds. In biological systems, they serve as information-carrying molecules or, in the case of some RNA molecules, catalysts.
snow petrels live in Antarctica, they are pure white small birds with a pointy beack.now Petrels stay warm because they have especially thick feathers and if they are freezing cold the will fluff up their feathers to stop the heat from escaping.
âWhere I liveâ. Polar bears live at the top of the world. They range across the circumpolar north, crossing the boundaries of five nations: Canada, Russia, the United States (Alaska), Denmark (Greenland) and Norway. More than 60% of all polar bears live primarily in Canada.olar bears live at the top of the world. They range across the circumpolar north, crossing the boundaries of five nations: Canada, Russia, the United States (Alaska), Denmark (Greenland) and Norway.