different ways food in produced

croplands rangelands, pastures, feedlots fisheries, aquaculture

traditional vs industrial agriculture

traditional: 20% of crops Goal-subsistence polyculture industrial: 80% of crops Goal-increase yield monoculture

agricultural revolutions

1st green revolution (1960s) artificial selection for high yield varieties 2nd green revolution (since 1990s) increased technology, GMO crops

define food security

having access to enough food to live active/healthy

food insecurity

living in chronic hunger and poor nutrition

what kind of nutrients we need in food

macronutrients: carbs, lipids, and proteins micronutrients: vitamins, minerals many ppl suffer deficiencies: vitamin A, iron, iodine

amounts of foods humans consume

50,000 edible plants, 14 make up 90% of world's calories 3 grains make up 50%: corn (maize), wheat, rice

environmental impacts form food production

biodiversity loss, soil issues, water depletion and agricultural water pollution, air pollution, human health

problems with 1st green revolution

crops are dependent on fertilizers, chemicals etc which is not always available in LDCs

2nd green revolution answers

GMO- genetically modified organisms

true or false: we have genetically modified a food to have higher yield?

false

government solutions to food production problems

control prices of foods, provide subsidies