Consider the following statements regarding geoengineering approaches to combat
global warming:
1. Solar Radiation Management (SRM) aims to reflect incoming solar rays to reduce
Earth's temperature.
2. Carbon Dioxide Removal (CDR) technologies focus on removing excess carbon
dioxide from the atmosphere.
3. Direct Air Capture (DAC) is currently the most widely implemented geoengineering
method.
4. Carbon Capture and Sequestration (CCS) is the only geoengineering method
currently in practical use.
Which of the statements given above are correct?
Explanation: Statements 1, 2, and 4 are correct. SRM aims to reflect solar rays, CDR
focuses on removing CO2, and CCS is the only method currently in practical use.
Statement 3 is incorrect as DAC is not widely implemented due to technological and
economic challenges.
Explanation: Statements 1, 2, and 4 are correct. SRM aims to reflect solar rays, CDR
focuses on removing CO2, and CCS is the only method currently in practical use.
Statement 3 is incorrect as DAC is not widely implemented due to technological and
economic challenges.