Ukukhiqizwa kophahla lwamapulangwe, ophahleni olufakelwe nolungenwe umoya, amathayela weCanada, amagemango, okokushiswa kwemoto, ukwehla, ukungavunyelwa kwamanzi, izindlela zokuphakamisa kanye nezinhlelo zokuboshwa okuwa phansi.