Food production - done Flashcards
What is foo security?
Having sufficient food to feed the population
What factors affect food security? (6)
- Changing population
- Changing diets
- Changing environment
- Pests and pathogens
- Costs
- Conflicts
How does changing population affect food security?
An increased population due to increasing birth rate means more food required
How does changing diets affect food security?
Changing diets in developed countries means scarce food resources (usually from developing countries) are transported around the world.
Meaning these food sources become more scarce in the countries that need them most
How does changing environment affect food security?
Environmental changes can affect food production, leading to famine occurring in some countries
How do pest and pathogens affect food security?
They can kill crops or livestock
How do costs food security?
Farming has high input costs. Sometimes the costs are too expensive leading to a lack of farming and food production in some areas
How do conflict affect food security?
Can affect the availability of water or food. The resources will become scarse
What does sustainable methods of farming lead to?
Involves making enough food but ensuring this is done without using resources faster than these resources can be renewed and used again
How do farmers restrict energy transfer?
limiting their movement – livestock are kept in small pens or cages so that they use less energy moving around
controlling the temperature of their surroundings – livestock are kept at their optimum temperature so that they use less energy regulating their body temperatures themselves
What does limiting their movement and controlling the temperature of their surroundings lead to?
Increase growth. More energy is converted to biomass
What are the ethical objects people have about farming?
- Keeping livestock in very confined spaces (factory farming) can spread disease easily
- Unnatural and uncomfortable conditions
5 examples of modern farming techniques?
- Livestock raised in small pens and cages
- Livestock fed antibiotics in their food
- Monocultures
- Fertiliser use
- Hedgerow removal
Adv. and disadv. of livestock raised in small pens and cages?
Livestock use less energy for movement, leaving more energy for growth
Keeping animals confined in such as small space is seen as unethical. Disease can spread easily is they are kept close together
Adv. and disadv. of livestock fed antibiotics in their food
Antibiotics prevent disease and bacterial infects in livestock
Scientists think it may lead to antibiotic resistant bacteria
