Spaghetti with meatballs are part of the culinary tradition of the Abruzzo, Apulia, Sicily, and other parts of southern Italy. A recipe for rigatoni with meatballs is in "Il cucchiaio d'argento" ("The Silver Spoon"), a comprehensive Italian cookbook known as the "bible" of Italian cooking. Other dishes that have similarities to spaghetti and meatballs include "pasta seduta" 'seated pasta' and "maccaroni azzese" in Apulia. Some baked pasta dishes from Apulia combine pasta and meat where meatballs, mortadella, or salami are baked with rigatoni, tomato sauce, and mozzarella, then covered with a pastry top. Other pasta recipes include slices of meat rolled up with
Food web continued web of life". Interest in food webs increased after Robert Paine's experimental and descriptive study of intertidal shores suggesting that food web complexity was key to maintaining species diversity and ecological stability. Many theoretical ecologists, including Sir Robert May and Stuart Pimm, were prompted by this discovery and others to examine the mathematical properties of food webs. Food web A food web (or food cycle) is a natural interconnection of food chains and a graphical representation (usually an image) of what-eats-what in an ecological community. Another name for food web is consumer-resource system. Ecologists can broadly lump all life