Food security: production, access and pressures
| English | Português |
|---|---|
| food security/fuːd sɪˈkjʊərɪti/ | segurança alimentar |
| sustainability/səˌsteɪnəˈbɪlɪti/ | sustentabilidade |
What would explain this observation?
- A region can produce food yet fail to provide enough for all its people. Production, transport, affordability and distribution all affect the outcome.
- Start with a prediction. State the quantities or features you would compare, then decide what evidence could distinguish two explanations.
Build the model
- Food security 粮食安全 means having enough food to feed a population. The specification identifies population increase, changing diets and international transport of scarce resources, new crop pests and pathogens, environmental changes such as failed rains, agricultural-input costs and conflict affecting water or food. These pressures can interact rather than act independently.
- food security: Having enough food to feed a population; sustainability 可持续性: Maintaining an activity without exhausting the resources and conditions supporting it.
Which additional evidence matters beyond total crop output?
Sustainable responses need to maintain production without exhausting the conditions that support it. Greater output can help, but inaccessible or unaffordable food does not solve every shortage. A shift towards resource-demanding foods changes how land and feed are used. Use the supplied context instead of assuming one response fits every country.
Match each technical term to its precise meaning.
Use the definitions to distinguish related quantities and processes.
Choose evidence that can test it
- Sustainable responses need to maintain production without exhausting the conditions that support it. Greater output can help, but inaccessible or unaffordable food does not solve every shortage. A shift towards resource-demanding foods changes how land and feed are used. Use the supplied context instead of assuming one response fits every country.
- Compare fictional production and population records using consistent time and food units. Calculate production per person, then identify losses, transport or access information missing from the simple ratio. Evaluate a response with a biological mechanism and a limitation, distinguishing short-term relief from longer-term sustainability.
Which two habits make the investigation or model in this case more defensible?
Compare fictional production and population records using consistent time and food units. Calculate production per person, then identify losses, transport or access information missing from the simple ratio. Evaluate a response with a biological mechanism and a limitation, distinguishing short-term relief from longer-term sustainability.
Work from known quantities
- State the known values and their units. Choose the relation because its assumptions fit this case, then rearrange before substitution.
- Known: a model region produces 12,000 food units for 3,000 people. Mean available production = 4 units/person before losses or distribution. If population rises to 4,000 with output unchanged, the ratio falls to 3. This is an accounting model, not a nutritional requirement or evidence that everyone receives the mean amount.
A model produces 18,000 food units for 6,000 people. Find production per person. Use the same sequence: known quantities → model → relation → substitution → unit and interpretation.
A model produces 18,000 food units for 6,000 people. Find production per person.
The result is 3 units/person. Known: a model region produces 12,000 food units for 3,000 people. Mean available production = 4 units/person before losses or distribution. If population rises to 4,000 with output unchanged, the ratio falls to 3. This is an accounting model, not a nutritional requirement or evidence that everyone receives the mean amount.
Check the conclusion and its limits
- A higher total output does not guarantee higher output per person. Conflict and cost can restrict access without reducing biological yield directly. Avoid using fictional classroom values as real population or famine statistics.
- Return to the original observation. Explain what the result supports, which conditions it assumes, and one way to test a competing explanation.
Higher total food output always guarantees equal access for everyone. This claim is false: A higher total output does not guarantee higher output per person. Conflict and cost can restrict access without reducing biological yield directly. Avoid using fictional classroom values as real population or famine statistics.
Food security: production, access and pressures: Sustainable responses need to maintain production without exhausting the conditions that support it. Greater output can help, but inaccessible or unaffordable food does not solve every shortage. A shift towards resource-demanding foods changes how land and feed are used. Use the supplied context instead of assuming one response fits every country.
Higher total food output always guarantees equal access for everyone.
A higher total output does not guarantee higher output per person. Conflict and cost can restrict access without reducing biological yield directly. Avoid using fictional classroom values as real population or famine statistics.
Having enough food to feed a population: write the technical term.
food security means Having enough food to feed a population.