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Growth/Decay: Decay (1x13)

Data di messa in onda: Mar 12, 1980

Lisa ventures into a sewage treatment plant in Chicago.Film inserts: Msima Spring in Kenya houses a massive food chain, and it all centers around hippos; the recycling of aluminum cans; leaf-cutter ants. ANIMATION: Gloria wants to be a mechanic. THE BLOODHOUND GANG: "The Case of the Missing Bloodhound, Part One." Mr. Bloodhound has been kidnapped prior to a trial, and he has sent a message which the gang deciphers. (Concludes in next episode.)