Suppose the United States provided food aid to an oil-rich developing country in a nonemergency situation? It prevents wise land management by the developing country
It avoids tariffs on goods that are exported to the developing country
It reduces food production in the developing country, harming rural areas
It discourages sustainable farming in the developing country

Awall of 0.5m thickness is to be constructed from a material which has average thermal conductivity of 1.4 w/mk. the wall is to be insulated with a material having an average thermal conductivity of 0.35 w/mk so that heat loss per square meter shall not exceed 1450 w. assume inner wall surface temperature of 1200°c and outer surface temperature of the insulation to be 15°c. calculate the thickness of insulation required.