Attempt this previous-year question. The correct option stays hidden until you choose.
Human activities in the recent past have caused the increased concentration of carbon dioxide in the atmosphere, but a lot of it does not remain in the lower atmosphere because of :
1. its escape into the outer stratosphere.
2. the photosynthesis by phytoplankton in the oceans.
3. the trapping of air in the polar ice caps.
Which of the statements given above is/are correct?
Pick an option to check yourself.
• Correct Answer: B
• Phytoplankton photosynthesis absorbs significant atmospheric CO2, making oceans a major carbon sink.
• CO2 does not escape to the stratosphere; polar ice trapping is negligible for contemporary CO2 removal.
Attempt Prelims MCQs or open Mains questions by paper — then continue the same bank inside the app with visual decks.
GyanGram