What do you think “food security” means??

Objectives: 1)Compare food resources & nutrition in different parts of the world 2)Explain the importance of the Green Revolution

Source of ENERGY Measured in Calories Source of raw MATERIALS

Insufficient calories Failure to eat variety of foods to fulfill body’s needs Causes: Disease Poverty Food Shortage

“In America, more than 16 million kids aren't sure where their next meal will come from.” “Tonight, one in seven kids in the world will go to bed hungry.” Source:

So what’s the problem??

Malnutrition today is result of POVERTY World’s hungry: Farm workers & subsistence farmers Do not have access to enough water for irrigation Have an income of less than $1/day Live mainly in Africa, Asia, and mountains of S. America

World’s grain production has increased...But not as fast as world’s population

Large increase in crop production without increased area of farmland Mexico: 1950 – 1970 increased wheat production 8-fold India doubled production of rice

Made possible by… Modern agricultural techniques Irrigation Management Synthetic Fertilizers & Pesticides New varieties of grains High-yield varieties Created food security, saved lives

Subsistence farmers do not benefit Reduced diversity of crops Increase nutrient pollution from fertilizers Artificially raised carrying capacity??