Fill in the Blanks Primary SectorOnline version Students will review facts about the primary sector in Spain. by Christopher Miller 1 Primary 60 dry Open Underground irrigated 4 Forestry deforestation Intensive primary raw cast Deep fishing Arable Mining Livestock sea Extensive 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 .
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