“Enhanced Rock Weathering” (ERW) is sometimes talked about with reference to which one of the following?
(a) Carbon dioxide removal and climate change mitigation
(b) Earthquake prediction through mineral analysis
(c) Extraction of rare earth elements from rocks
(d) Improvement of soil fertility for agriculture

Question

&ldquo;Enhanced Rock Weathering&rdquo; (ERW) is sometimes talked about with reference to which one of the following?
(a) Carbon dioxide removal and climate change mitigation
(b) Earthquake prediction through mineral analysis
(c) Extraction of rare earth elements from rocks
(d) Improvement of soil fertility for agriculture

ONLiNE UPSC · Accepted Answer

Enhanced Rock Weathering (ERW) is a nature-based carbon removal technology designed to accelerate the natural geological process of rock weathering, which already removes significant amounts of carbon dioxide (CO₂) from the atmosphere each year. In this process, silicate rocks such as basalt are crushed into fine particles and spread over land, especially agricultural fields. When these minerals interact with rainwater and CO₂ in the atmosphere, they undergo chemical reactions that convert atmospheric CO₂ into stable carbonate minerals.

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M Question 1	⏱ 0
“Enhanced Rock Weathering” (ERW) is sometimes talked about with reference to which one of the following? (a) Carbon dioxide removal and climate change mitigation (b) Earthquake prediction through mineral analysis (c) Extraction of rare earth elements from rocks (d) Improvement of soil fertility for agriculture