Revision summary
Tropical staple crops already sit near heat and rainfall limits, so extra warming cuts yields. Floods, droughts, and glacier-fed irrigation loss make supply unstable. The poor lose access when local prices rise, even if global trade still moves grain. Heat, pests, and disease reduce the nutrition that food can deliver. Women, rainfed farmers, and small islands carry the first losses.
Model answer
Flow diagram
flowchart TD C[Climate change] --> Y[Yield loss heat flood drought] C --> F[Fisheries pests spoilage] Y --> P[Price shock] F --> N[Weaker nutrition] P --> H[Household hunger] N --> H
Conclusion
- Expand heat-tolerant and short-duration varieties through public research such as IRRI and national systems like ICAR.
- Combine irrigation, crop insurance, and social grain stocks so access does not collapse when the monsoon fails.
- Protect mangroves, soils, and small fisheries because they are food systems, not only environmental extras.
In the tropics, climate change cuts harvests, raises prices, and spoils nutrition at the same time. Food security policy has to treat seeds, water, storage, and social protection as one climate task.
Quick related
Students also ask
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Why is the world today confronted with a crisis of availability of and access to freshwater resources?
Next question in the 2023 paper (Q5). View answer →
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Is food insecurity in the tropics only a production problem?
No. Prices, storage, health, and gender decide access and utilisation even when some grain is still grown.
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Do tropical countries face the same climate food risk?
They share heat and monsoon or trade-wind climates, but irrigation, income, and governance make the shock unequal.
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