Compléter Primary SectorVersion en ligne Students will review facts about the primary sector in Spain. par Christopher Miller 1 Mining 4 primary dry cast Intensive Extensive deforestation Deep Arable Open fishing Underground sea Primary Livestock raw 60 Forestry irrigated sector activities involve obtaining materials directly from the Earth or from living things . There are many different types of sector activities . farming is the cultivation of land to produce crops . Farmers can grow crops , which only need rainwater . They can also grow crops , which need extra water to grow . farming involves buying , selling , or keeping animals to produce food and other products . farming means animals spend a lot of time outdoors , in open spaces . farming means animals spend a lot of time indoors , in enclosed spaces . Fishing involves catching fish in different types of bodies of water . - fishing is carried out far away from the coast while coastal is carried out near the coast . The process of cutting down forests is called . is the exploitation of forests and tree plantations . involves taking natural materials from the Earth´s crust in two different ways . mining is carried out in tunnels below the Earth´s surface . - mining is carried out above ground . In 1900 , about per cent of the population worked in the primary sector . Today , only about per cent work in this sector .