QUESTION

Easy

Environment & Ecology

Prelims 2022

Among the following crops, which one is the most important anthropogenic source of both methane and nitrous oxide?

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Explanation

Methane and nitrous oxide emissions from rice farms could have the same long-term warming impact as about 600 coal plants.

Rice cultivation emits methane and nitrous oxide due to flooded fields and nitrogen-based fertilizers. Flooding creates anaerobic conditions, producing methane released through rice plants. Fertilizers poorly absorbed by rice lead to soil microbes converting nitrogen into nitrous oxide.

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