Conservation conflicts arise when natural - resource shortages develop in the face of steadily increasing demands from a growing human population. Controversy frequently surrounds how a resource should be used , or allocated , and for whom . For example , a river may supply water for agricultural irrigation , habitat for fish , and water - generated electricity for a factory . Farmers , fishermen , and industry leaders vie for unrestricted access to this river , but such freedom could destroy the resource , and conservation methods which should be planned in advanced by individuals , organizations , or governments are necessary to protect the river for future use. Conflicts worsen when a natural resource crosses political borders . For example , the headwaters , or source of a major river may be located in a different country than the country through which the river flows . There is no guarantee that the river source will be protected to accommodate resource is managed has a direct effect upon other natural resources . Cutting down a forest near a river , for instance , increases erosion , the wearing away of topsoil , and can lead to flooding . Eroded soil and silt could the river and adversely affect many organisms such a fish and important aquatic plants that require clean , clear freshwater for survival.55: what is the main idea of the passage ? A: natural resource shortagesB: agricultural irrigation C: the headwaters of a major riverD: conservation conflicts56: which word in the passage means ( a promise that something will be done or will happen , es pecially a written over a particular period of time) ? A: shortageB: guaranteeC: population D: habitat57: what mau bring water to agricultural irrigation? A: a river B: topsoil C: erosionD: a forest58: which of the following sentences is true ? A: conflicts improve when a natural resource crosses political borders B: the source of a main river may be located in the country through which the river flows than a different country C: the way where one ordinary source is managed has a direct effect upon other ordinary sources . D: there is assurance that the river source will be confined to provide accommodation for resource needs downstream .59: what does the word ( arise ) mean ?A: get up B: sit up C: stand up D: spring up60: which of th following is not true ? A: farmers , fishermen, and industry leaders vie for open access to the river B: conservation methods are incidental to care for the river for future use. C: a river may provide water for agricultural irrigation , habitat for fish , and water - generated electricity for a factory . D: arguments often surround how a resource should be used , or allocated , and for whom. 61: when do conflicts worsen ? A: when eroded soil and silt could the river and affects many organisms.B: when natural - resource shortage increase in the features of gradually C: when free dom could destroy the resource . D: when a natural resource crosses political borders. 62: what does the word ( supply ) mean ?A: cover B: provide C: make up for D: compen63: what does the word ( methods ) mean ? A: manner B: ordersC: structureD: ways 64: which word in the passage means (living or growing in , happening in , or connected with water )? A: major B: necessary C: fresh D: aquatic
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