LDCs continue to use natural gas as a primary fuel instead of wood for cooking and heating. There is a widening of the wealth gap in many countries. The pessimistic view warns that population momentum will propel humankind beyond the carrying capacity of the earth creating much human suffering. The tropical rain forests are predominantly located in the temperate biome. Soils best suited for agriculture are referred to as loam.
Marginal lands are increasingly less resilient to human and climatic disturbances.
Name some factors that may decline food security and others that will increase food yields.