describe como viaja el oxigeno a traves del aparato respiratorias apartir de las fosas nasales hasta llegar a los pulmones toma como base las estructuras y organos que se alistan a continuacion BRONQUIOS, FARINGE, TRAQUE, ALVELOS, BRONQUIOLOS, LARINGE, FOSA NASAL

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.

affects the water bodies: excessive use of fertilizers causes eutrophication. the fertilizers which are used on plants affect the quality of land on which it is used, further causing erosion of soil. the fertilizers used on plants contain harmful chemical fumes which affect the environment.

no i don't feel that humans have oversubscribed some medications