population and food Flashcards
where in the world is there a population decline and why?
eastern European countries due to migration
where is population growth the fastest?
LEDCs
how rapidly in africa growing a year?
2%
what are the key things that affect a population linked to environment?
climate
soils
water supply
resource distribution and geology
how does soils determine population?
fertile soils ensure crop growth
eg permafrost limits this
how does climate determine population?
extreme temperatures can limit population and don’t allow growth of crops or they may be inhabitable areas
how does the distribution of resources affect population?
access to food, water, energy can affect where a population is situated
how can geology/topography determine population?
shape of land determines the settlement of people and maybe the quality of life
favelas of slopes
what is infant mortality rate?
number of deaths under one year of age among live births in a given area during a year per thousand
what is death rate?
number of deaths per thousand of a population a year
what is fertility rate?
number of births a women will have in her lifetime within a given population
what has quadrupled over the last century and by how much ?
global population
1915=1.8 billion now=7.3billion
how many people are expected to live in the world in 2050?
9.7 billion
what is driving up global food demand?
rising increase in developing countries
changing diets
what is growing too slowly for the food demand
crops especially in the tropics
