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प्रश्न
Food chains are very important for the survival of most species.
Matter and energy are two fundamental inputs of an ecosystem. Movement of:
पर्याय
Energy is bidirectional and matter is repeatedly circulating.
Energy is repeatedly circulated and matter is unidirectional.
Energy is unidirectional and matter is repeatedly circulating.
Energy is multidirectional and matter is bidirectional.
MCQ
उत्तर
Energy is unidirectional and matter is repeatedly circulating.
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