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1) By conserving environment there could be achievement of a. sustainable development b. dynamic equilibrium in environment c. maintained ecosystem d. conserved energy resources
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2) Calophyllum tree in Sarawak has ability to treat a. blood cancer b. AIDS c. Hepatitis d. polio
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3) In incineration plants not recycled waste is a. burned b. filter c. reduced d. discharged
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4) Island of Mauritius have a bird once called a. dodo b. duckbill c. ostrich d. hen
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5) The introduction of foreign specie will upset dynamic equilibrium of a. water b. air c. ecosystem d. climate
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6) Animal which were first hunted for food now being hunted for sport is a. bison b. tiger c. camel d. leopard
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7) Buried waste contain a. toxic chemicals b. bacterial c. both a and b d. useful minerals
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8) Rats, pigs and monkeys brought by human on island eaten eggs of a. dodo b. duckbill c. ostrich d. hen
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9) A gas which is major gas in trapping heat and prevent it from escaping is a. oxygen b. ozone c. carbon dioxide d. nitrogen
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10) Maintenance of oxygen and carbon dioxide in air is done by a. forests b. humans c. animals d. global warming
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11) Over-exploitation includes excessive a. energy usage b. hunting c. both a and b d. plantation
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12) Marine animals specially fish when live in factory discharged waste water tends to get poisonous for humans and can cause a. death b. diseases c. both a and b d. development
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13) A global phenomenon involving the warming of earth's climate is termed as a. global warming b. greenhouse effect c. over-exploitation d. pollution
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14) Clearing forest can lead to washing away of soil called a. erosion b. landslides c. weathering d. all of them
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15) Madagascar rosy periwinkle is used in the treatment of a. blood cancer b. AIDS c. Hepatitis d. polio
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16) The things which are thrown away after one use are called a. disposables b. recycle able c. reduce able d. reusable
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