保護(hù)水資源(英文ppt)

1、how are you?my mother water water is the source of liwater is the source of li fe.we cant live without fe.we cant live without water.however,with the inwater.however,with the in creasing population and icreasing population and i ndustrial development,watndustrial development,wat er pollution has bec

2、ome a er pollution has become a serious problem.large amoserious problem.large amo unts of wastewater go intunts of wastewater go int o rivers and seas directlo rivers and seas directl y without being treated,wy without being treated,w hich can be dangerous to hich can be dangerous to people.also lo

3、ts of peoplpeople.also lots of peopl e pay no attention to save pay no attention to sav ing water in daily life,wing water in daily life,w hile in some place water hile in some place water is badly needed. is badly needed. the water polution the great shortage of water primary pollution sources dry

4、season level periodwet season water pollution is mainly caused by the chemicals discharged by the factories. we should regulat e the sewage discharge standar d to minimize the impact of hum an activity on the environment. groundwater pollution inside the sewainside the sewa ge through the ge through

5、 the hole drilling in hole drilling in nanshan, eventnanshan, event ually flow from ually flow from water-eroded water-eroded cave, pollution cave, pollution is serious. is serious. text add contents the national groundwater quality the national groundwater quality in 100 bc, the water can d rink wi

6、thout purification. in 20th century 60s, water neede d purification in 20th century 90s, water purific ation required more years later, the water will b e its time for us to take some measures tits time for us to take some measures t o improve the situation.factories should o improve the situation.f

7、actories should tre-at the wastewater before letting it go tre-at the wastewater before letting it go int-o rivers.we can play a positive role iint-o rivers.we can play a positive role i n s-aving water.for example we can reun s-aving water.for example we can reu se t-he water for wishing rice to wa

8、sh vse t-he water for wishing rice to wash v eget-ables and then clean a mop. eget-ables and then clean a mop. protect our selves ! to protect water is to let us change it ! then ,what can we do? first we must first we must protect the factoryprotect the factory form pouring waste form pouring waste

9、 water into the riverwater into the river second we should stopsecond we should stop people from throwing litter people from throwing litter into the river. many kinds into the river. many kinds of litter may pollute the enof litter may pollute the en vironment.vironment. finally we can finally we can tell the visitorstell the visitors how important how important the water is.the water is. use of renewable materials strengthening waterstrengthening water saving consciousness saving consciousness implement of sustainable economic development strategies policy plant more treesplant more tr