The answer is chloroplasts and mitochondria.
<span>When solar energy in the form of sunlight reaches a leaf of a plant, it passes through the leaf to chloroplasts. Chloroplasts contain pigment chlorophyll which is excited by light. As the result, </span>a series of chemical reactions occur in the chloroplasts and carbon dioxide and water are converted into glucose and oxygen. Now, glucose is broken down and transported into mitochondria where through different processes (Krebs cycle and electron transport chain) energy is produced in the form of ATP.<span>
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Id hav to go with A,reason i say that is, synthetic is man made..so it could b altered at anytime
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The best answer would be conservation of resources. A sustainable society is based on the capacity to lengthen the resources through conservation. Zero pollution and increasing wilderness areas are also applicable since both involve the maintenance of a healthy amd secure environment.