Answer to Question 1
Low-income countries spend a greater portion of their budget on necessities such as food.
Low-value staples such as cereals account for a larger share of the food budget in poorer countries.
Overall, low-income countries are more responsive to changes in income and food prices and therefore make larger adjustments in their food-consumption patterns.
Adjustments to price and income changes are not uniform across all food categories.
Answer to Question 2
Any three of the following:
wind
solar
bioenergy (biogas, butanol, and ethanol)
hydrogen (fuel cells)
nuclear