Biology


Chapter : 6. Natural Resources

Carbon Cycle

Carbon Cycle :
CO2 is 0.03% in atmosphere, which is utilized by producers in photosynthesis for making food.
From producers, it goes to consumers and then through decomposers into atmosphere.
The producers, consumers & decomposers may be converted into fossil fuel (petrol, coal etc.) or form carbonate rock after death.
By way of respiration the biotic component returns CO2 to atmosphere.
CO2 may get dissolved in water. The lime rocks also contribute to CO2 in water. The aquatic producer use this CO2 for photosynthesis and return it by respiration.
By combustion of fossil fuel & also by volcanic activity, CO2 is returned to the atmosphere.

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