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Excess carbon dioxide intensifies the greenhouse effect, driving global warming, polar ice melt and ocean acidification that degrades marine life, outweighing any potential photosynthetic benefits to plants. Class 9 Science Exploration Chapter 13 Important Questions SQP from Class 9 Science Chapter 13 ...

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Piyush365
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Plants absorb atmospheric carbon dioxide through photosynthesis. Carbon returns to the air through plant and animal respiration, microbial decomposition of organic remains and the combustion of biomass and fossil fuels. Class 9 Science Exploration New Book All Chapter Solution Revise, Reflect, Refine ...

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Piyush365
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The correct option is (iii). Solar radiation penetrates the atmosphere and heats the ground, which then emits infrared radiation that is trapped by atmospheric greenhouse gases, sustaining global surface temperatures. CBSE Class 9 Science Chapter 13 Earth as a System: Energy, ...

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Piyush365
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The correct option is (ii). Biogeochemical cycles continuously circulate and replenish essential elements like carbon, nitrogen and oxygen between living organisms and physical environments, maintaining ecosystem balance and life sustainability. Class 9 Science Chapter 13 Earth as a System: Energy, Matter ...

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