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Question
Choose the correct sequences
Options
CO2 in the atmosphere → decomposers → organic carbon in animals → organic carbon in plants
CO2 in atmosphere → organic carbon in plants → organic carbon in animals → inorganic carbon in soil
Inorganic carbonates in water → organic carbon in plants → organic carbon in animals → scavengers
Organic carbon in animals → decomposers → CO2 in the atmosphere → organic carbon in plants
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Solution
CO2 in atmosphere → organic carbon in plants → organic carbon in animals → inorganic carbon in soil
Explanation:
Carbon is present as a combined state in the atmosphere in the form of carbon dioxide. This C02 from the atmosphere is incorporated into life forms through the basic process of photosynthesis. This process converts carbon dioxide into glucose molecules (organic carbon in plants). Animals feed on the plants and utilise the glucose molecules to release C02 and energy (organic carbon in animals). The dead plants and animals are then consumed by decomposers and made available as fossil fuel and humus (inorganic carbon in soil).
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