Birth Rate - The ratio of live births in an area to the population of that area, Death Rate - The ratio of deaths in an area to the population of that area, Population Growth Rate - A measure of population change, MEDC (More Economically developed Country) - A country in which people are relatively wealthy. Per capita income is relatively high. Birth and death rates are low. They are usually industrialised., LEDC (Less Economically developed Country) - A country in which people are relatively poor. Per capita income is relatively low. Birth and death rates are high. They are not usually industrialised., Total Fertility Rate - The average number of children each woman has over her lifetime, Sustainable - Capable of being carried on forever, Sustainable development - Development which meets present needs without compromising the ability of future generations to achieve their needs and aspirations, Land degradation - The decrease in the capacity of the land to produce food caused by human activity and natural processes e.g. soil erosion, Biodiversity - The number and variety of species within a region, Pollution - Undesirable change in the physical, Ecological footprint - The amount of the Earth’s resources of an area that a person or group consumes to support their lifestyle, Intensification - The use of many inputs (fertiliser, Pesticides - Chemicals designed to kill organisms that feed on or cause disease in crops, Controlled environment - An environment in which factors that affect crop growth e.g. light, Selective breeding - The selection by humans of individuals to breed together, Genetically modified organism - An organism that has had its genetic material altered in a way hat does not occur naturally by mating, Monoculture - One crop planted over a large area, Soil degradation - The breakdown and loss of fertility of soil., Salinisation - The build-up of salts in soil that is toxic to plant roots, Erosion - The loss of soil as it is washed and blown away, Artificial fertilisers - Nitrates, Food miles - The distance food travels through the complete production process until it reaches the consumer, Eutrophication - The artificial enrichment of water with too many inorganic nutrients such as nitrates and phosphates,

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