Marco Passarello Orden de los libros (cronológico)

"In the tower of Count Stelli in the ancient city-state of Agora, two children meet, apparently by chance. At first, their only goal is survival: In Agora, everything can be bought and sold, debt is death, and Mark and Lily must barter their labor for their lives. But they are destined to fulfill the prophecy of the secret Midnight Charter devised by Agora's founders. What is the Charter? How and why are members of the city's powerful elite involved--and who among them can Lily and Mark trust?"--Page 2 of cover.

Explores the process of digestion, focusing on the funny, fascinating, and horrible aspects. Examples include: how much pee your bladder can hold, what disease makes your eyeballs bleed, why astronauts can't eat beans before a space flight and which part of your brain makes you throw up. Suggested level: primary, intermediate, junior secondary