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Q.1 2. નીચેનામાંથી કોણ આહારશૃંખલાનું નિર્માણ કરે છે ?
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Q.2 3. નીચે આપેલામાંથી કઈ પર્યાવરણને અનુકૂળ પ્રથા છે ?
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Q.3 1. નીચે આપેલ પૈકી કયો સમૂહ માત્ર જૈવવિઘટનીય પદાર્થો ધરાવે છે ?