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Chap.27 Biology and human welfare

  1.         Biology and Human welfare   2.         What are our principle sources of energy? (a) Solar Energy           (b) Nuclear Energy (c) Tidal Energy           (d) All of these A 3.         Bacteria store: (a) Electrical energy     (b) Chemical energy (c) Mechanical Energy             (d) All of these B 4.         Which one is not a renewable resource? (a) Air                           (b) Water (c) Coal    ...