4.7.5 Food production (might come up)
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What is food security
Having enough food to be able to feed a whole population
Biological factors threatening food security
Rising birth rates Changing diets in developed countries New pests and pathogens Increased cost of agriculture Armed conflicts
How does intensive farming increase the production of animals
Feed animals high protein foods to increase growth Reduce their energy loss to the environment -limiting movement -regulating their surrounding temperature Feed animals antibiotics to prevent diseases
Advantages of intensive farming
Higher yield of food More efficient Allows easier quality control
Disadvantages of intensive farming
May lead to antibiotic resistance Cost is high Ethical objections eg limiting movement of animals may cause them harm Biodiversity may be reduced