No matter how big a country is, if its environment cannot support its human population, it is considered overpopulated.

"The richest 20 percent of humanity consume 86 percent of all goods and services, while the poorest fifth consume just 1.3 percent."

problems, and are serious threats to the production of major world food crops such as wheat, rice and maize. It is estimated that over 77M ha of land is devastated by drought, salinity and nutrient deficiencies that are brought about by long-term nutrient mining and climate change and variability.

bility. Using these technologies, soil scientists, plant nutritionists and plant breeding and genetic scientists work together to bring about solutions and hope to farmers in areas that are vulnerable to soil fertility and environmental stresses.

Naturally, these climate changes have direct effects on agricultural production. It is anticipated that for moderate global average temperature increases (estimated between 1-3oC)

By 2030, production from agriculture and forestry is projected to decline over much of southern and eastern Australia due to increased drought and fire.