What is the Function of the Respiratory System?

The respiratory system is a network of organisms and tissues that help you breathe. This system helps your body to absorb oxygen from the air so your organs work. It also cleans waste gases, such as carbon dioxide, from your blood

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the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.