english: So almost all the biology that we observe can be thought of as a series of problems and their corresponding solutions, and the first problem that every organ must solve is a continuous supply of nutrients to fuel all those cells of the body.
non_english: Gotovo celokupna biologija može da se posmatra kao niz problema i odgovarajućih rešenja, a prvi problem koji svaki organ mora da reši je neprekidna dostava hranljivih materija koje napajaju ćelije tela.