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.
The snow petrels choose very perculiar places to nest. You might think being surrounded by snow might make you feel cold, but in fact it is the exact opposite for snow petrels. At september the petrels gather on the ice. When they have mated the petrels hide in the rocks until eggs are layed in November.From that time the parents mind them. In January they hatch and their par ents mind them until they can take care of themselves. The snow Petrel can live to 20 years old.he all white snow petrel is about the size of a pigeon. They are w hite birds that look like pieces of ice that have come to life. All Petels are graceful flyers and this one is very small. The Snow Petrel is argubly the most beautiful bird on Earth.