बिहार कितने कृषि जलवायु क्षेत्रों में विभाजित (Zone) है ? - Bihar is divided into how many agro-climatic zones? - Bihar Kitne Krishi Jalwayu Area Me Vibhajit (Zone) Hai ? Bihar Gk in hindi, Krishi 3 question answers in hindi pdf 4 questions in hindi, Know About 2 Bihar Gk online test Bihar Gk notes in hindi quiz book 5