Words

• affect = have an impact on
• arrest = to take someone to a police station because they may have done something that is against the law
• bank = side of a river
• battle = fight against
• boundary = line between two countries
• cliff = large area of rock or mountain that is very steep and falls to a river below
• concrete = material that is made up of cement, stones, sand and water
• crossing = to go from one side of the river to the other
• disappointment  = setback , failure
• edge = border
• either side = both sides
• electronic surveillance = machines and other electronic objects with which you can watch and control an area
• encounter = meet
• environment = the world around us
• feasible = realistic, possible
• ferry = boat that brings people from one place to another
• firefighter = person who helps put out fires
• gash = cut, line
• harsh = rough
• incredible = unbelievable
• landscape = countryside
• ludicrous = silly, foolish
• migrant = person who leaves their country to go somewhere else
• oppose = to be against something
• park ranger = person who oversees a national park
• patrol = guard, watch
• permission = to be allowed to do something
• popular = liked by many people
• push = method
• ranger = someone who looks after the countryside
• resident = a person who lives in a place
• retired = to be out of work because you are too old
• savage = cruel, bad, wild
• security = safety
• sensitive = here: easily damaged or destroyed
• sheer = steep
• soil = land, ground
• source of income = place from  which people get their money
• straddling =  to go from one place to another
• terrain = land
• trace = move along
• unanimously = everyone has agreed
• unauthorized = illegal, not allowed
• unfold = it shows itself
• unforgiving = here: very extreme countryside