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Biology

GCSE · AQA

QuestionsFlashcards

Communicable Diseases
Monoclonal Antibodies
- Producing Monoclonal Antibodies
  6
- Uses of Monoclonal Antibodies
  7
Plant Disease
- Detection and Identification of Plant Diseases
  6
- Plant Defence Responses
  6

Factors Affecting Food Security Flashcards

All 6 cards in this deck

What is food security?: Having enough food to feed a population.
Name three biological factors that threaten food security.: Increasing birth rate; changing diets in developed countries; new pests and pathogens. (Also environmental change, cost of agricultural inputs and conflict.)
Why does an increasing birth rate threaten food security?: More people must be fed, so demand for food rises faster than the food supply.
How do changing diets in developed countries threaten food security?: Scarce food resources are transported around the world to meet those diets, so less is left for local people.
True or false? New pests and pathogens are not a threat to food security because they only affect wild plants.: False. New pests and pathogens also affect farming, damaging crops and farm animals so less food is produced.
In a country, population is rising faster than food production. What happens to the amount of food available per person, and to food security?: Food per person falls, so food security decreases.