Soil and Food Resources

• What are soil horizons?
• Why does tropical ranforest have shallow topsoil?
• What are the forces behind soil erosion?
• What are the effects of soil erosion?
• Which anthropogenic activities cause soil erosion?
• What are some soil conservation methods
• Why should we worry about world food production?
• Why is it worrisome that 4 staple crops supply most of the world’s food?
• How can we make more food available to the ‘world market’
• What is integrated pest management?