Main points 

Sedentary agriculture: born 12.000 years ago, first way to coltivate lands, responsible of populations’ development

(Now: 7000000000 of people on Earth);

FOOD:

•          Essencial

•         Substenes life

•         Provides energy

•         Promottes growth;

According to Thomas Malthus, population numbers change according to the suitable resources of a country;

Subsitence level = a balanced situation;

food increases = population increases;

food increases in a costant way à population will grow in an exponential one;

exceeding population will die and population and resources will return to balance;

means of increasing food
population increase;

When there is enough food for all people, there is a state of balance
  -> called positive;

Malthus disapproved Elizabethan “poor law”;

the level may be defeated with preventive checks.