Food security: production, access and pressures
הוצג| English | משמעות |
|---|---|
| food security/fuːd sɪˈkjʊərɪti/ | ביטחון תזונתי |
| sustainability/səˌsteɪnəˈbɪlɪti/ | שימוש מתמיד |
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.
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?
רמת קושי 1/5 · 100 מטבעות + בונוס קטן בהשלמה הראשונה היום
Food security is per person: total output must be set against population size and whether people can actually obtain food. Packaging colour and plant height say nothing about access.
Match each technical term to its precise meaning.
רמת קושי 2/5 · 140 מטבעות + בונוס קטן בהשלמה הראשונה היום
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.
In the lab: 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?
רמת קושי 2/5 · 140 מטבעות + בונוס קטן בהשלמה הראשונה היום
Stating the conditions and assumptions lets others repeat the work exactly, and recording the supporting evidence lets them check the conclusion. Hiding disagreeing results removes the evidence that could challenge a wrong conclusion, and one measurement can never establish a wider claim.
Work from known quantities
- 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.
Your turn: A model produces 18,000 food units for 6,000 people. Find production per person.
A model produces 18,000 food units for 6,000 people. Find production per person.
רמת קושי 2/5 · 140 מטבעות + בונוס קטן בהשלמה הראשונה היום
The result is 3 units/person. Known: 18,000 food units for 6,000 people. Production per person = 18,000/6,000 = 3 units per person. This is an accounting average; it does not show that everyone receives it.
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.
Not true: Higher total food output always guarantees equal access for everyone. Output can rise while access falls - through price, conflict or unequal distribution. Security is about people reliably obtaining food, not just fields producing it.
- Food security means having enough food to feed a population.
- Sustainable responses need to maintain production without exhausting the conditions that support it.
- Watch for: A higher total output does not guarantee higher output per person.
Output can rise while access falls - through price, conflict or unequal distribution.
רמת קושי 1/5 · 100 מטבעות + בונוס קטן בהשלמה הראשונה היום
True. Output can rise while access falls - through price, conflict or unequal distribution. Security is about people reliably obtaining food, not just fields producing it.
Having enough food to feed a population: write the technical term.
רמת קושי 1/5 · 100 מטבעות + בונוס קטן בהשלמה הראשונה היום
food security means Having enough food to feed a population.