aTreatedwastewater (TWW) irrigation is becoming increasingly prevalent in arid regions of the world, due to growing demand and decline in freshwater supplies. Treatedwastewater (TWW)灌溉在淡水供应变得越来越流行在世界的干旱的地区,由于扩大需求和衰落。[translate] ...
根据第二段Onlyabout2.5percentoftheplanet'swaterisfreshwater.(地球上只有约2.5%的水是淡水。其中,近69%的水被冰川和冰盖冻结。)以及第三段Andabout30percentisgroundwater(大约30%是地下水)可知地下水约占2.5%*30%=0.075%。故选A。(2)推理判断题。根据第四段.Ithidesundermountains,plains,andevendeserts.Tiny...
Over 20 percent of the world's mangroves are estimated to have been lost over the past 40 years, the Food and Agriculture Organization of the United Nations said in a report last year. China is one of the few countries with a net increase in mangrove areas, now totaling 29,200 hectares....
How much freshwater is in groundwater? How deep is the groundwater table? What approximate percentage of the earth's freshwater is groundwater? How much water is under the Earth's crust? How much water is in the Earth's crust? How deep is an artesian well?
Despite the fact that roughly 70 percent of the Earth’s surface is taken up by water, only about 3 percent of that water is freshwater. On top of that, only about 0.5 percent is available for drinking. If that does not make you think twice about wasting water, we don’t know what ...
Althoughwater covers 75 percent of the world's surface, 97.5 percent of the earth's water is salt water; of the remaining 2.5 percent, most is locked away as groundwater or in glaciers. What percentage of Earth is land? Less than 30%of the 510 million square kilometers of area on the...
4. True or false: 31 percent of the world's population is Buddhist. False. Approximately 31 percent of the world's population professes belief in Christianity. Read More: How Many Religions Are There? Which Are the Most Influential? 5. Which famous stone is known as the "Great Star of ...
drink" from the poem "The Rime of the Ancient Mariner," you'll understand that most of this water -- 97 percent of it -- is undrinkable because it's saltwater (see illustration on next page). Only 3 percent of the world's water supply is freshwater, and 77 percent of that is ...
People use freshwater sources for cleaning, manufacturing, drinking water, and a wide variety of other applications. Fresh water is often stored as surface water (e.g. lakes, streams, snow, and ponds) and groundwater (e.g. aquifers and underground lakes). After being used, fresh water is ...
二、阅读理解There are about 1.5 million kinds of living things on Earth, but how many do you see every day?You often see the big colourful animals, like birds, rabbits, and fish. But look more closely. Can you see the small ones, too? Insects(昆虫) make up 80 percent of all the ...