खाद्य-जाल में ऊर्जा का प्र� – McqOptions

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1.	खाद्य-जाल में ऊर्जा का प्रवाह होता है -
A.	एक - दिशीय
B.	द्वि-दिशीय
C.	चतुर्दिशीय
D.	त्रि-दिशीय
Answer» B. द्वि-दिशीय

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