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.
Penguins do not live in the northern hemisphere; nor do they live inland any distance from the ocean. They are not found in freshwater creeks and rivers. They are not found in â¦ Europe, North America or Asia, or in Arctic waters. It is perhaps more pertinent to mention where they do live. Four of the 17 species of penguins live along the coast of Antarctica and the Antarctic Peninsula. None are able to venture far inland on the Antarctic, as there is nothing on the Antarctic continent to support life.