Food production
The efficiency of food production can be improved by restricting animals movement and by controlling the temperature of their surroundings.
Things affecting food security include: changing climate, growing population, and pests and pathogens.
The prices of Wheat and rice increased by 130% and 75% in 2008 .
Intensive farming is the latest technique used to meet the rising demand for cheap food.
Intensive agriculture use large amounts of fertilizer, pesticides, and labor to increase per acre yield of the crop being grown.
Farmers growing arable crops such as wheat and barley.
Farmers growing a single crop year after year on the same land to maximise their profits. This is called monoculture.
It reduce key nutrients in the soil and damages the soil ecology. It also reduces biodiversity.
Organic farmers use natural fertilisers. They do not use toxic pesticides.
Organic farming promotes biodiversity and keep the soil heathy.
Organic food is expensive and people are willing to pay more for their health benefits.