Future health and food security and sustainability
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Define food security.
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All Flashcards in Topic 12.4
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12.4.112 cards
Define food security.
Reliable physical and economic **access** to enough safe, nutritious food.
Food availability vs food security?
**Availability** = how much food is produced/supplied; **security** also needs **access**, affordability and stability.
Define sustainability (food).
Meeting present food needs **without depleting** the land, water and climate future generations need.
What are GM organisms?
Crops or animals whose **DNA is altered** to raise yield or add pest/drought/frost resistance.
What is vertical farming?
Growing crops in **stacked indoor layers**, year-round, on a tiny land footprint with recycled water.
What is in vitro (lab-grown) meat?
Meat **cultured from animal cells** without raising livestock — far less land and water than conventional meat.
How does cutting food waste help?
Feeds more people with **no new land or water**, and saves the water, energy and fertiliser already used.
One environmental downside of GM crops?
**Biodiversity loss** — wide single-variety planting plus herbicide use removes wild plants and insects.
One social downside of GM crops?
**Inequality** — patented, costly seed leaves poorer farmers behind richer ones.
Case study — Green Revolution in India?
High-yield grain made India self-sufficient (availability) but **drained aquifers** and worsened inequality (sustainability cost).
Health link — prevention vs treatment?
Diseases like **malaria** (sub-Saharan Africa) and **cholera** (Haiti 2010) are far cheaper to **prevent** (nets, vaccines, clean water) than to treat.
What does a top [10] food essay need?
A structured, evidenced argument, **named located examples**, both sides weighed, and a **justified conclusion**.
Topic 12.4 study notes
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