The meaning of UNPOLLUTED is not contaminated or made unclean or impure : not polluted; especially : not contaminated with man-made waste. How to use unpolluted in a sentence.
Describes how a young photographer from Canada has found that water in some of the world's rivers and lakes is polluted enough to develop photographic film. Details of the study; Water pollution; Hydroquinone concentration; Reaction. INS...
“a great/large quantity of+名词”作主语时,其谓语的数取决于 quantity的数,谓语动词用单数;时间状语in the past twenty years和现在完成时连用,因此此处用has been done形式。故选C项。【点睛】“a large quantity of +名词”和“large quantities of+名词”作主语时的主谓一致a great/large quantity of 和...
and inexpensive for a company or municipality, but it eventually destroyed the ecosystems found in the water. Many large rivers became nothing more than sewers. Most troubling was the polluting of groundwater, creating serious health hazards for those people who drank water containing toxic ...
In an investigation many interesting colored and colorless euglenoids were collected in the rivers, ponds, lakes, streams, channels, pools, puddles, ditches, tanks, industrial effluents and sewage water at various seasons of the year. Some of them formed in a bloom while others presisted for ...
Runoff generation in a hypermaritime bog-forest upland Shallow hillslope groundwater is shown to be a dominant source of streamflow in sloping bog鈥揻orest uplands of the North Coast Forest District, British Co... J. J. Gibson,JS Price,R Aravena,... - 《Hydrological Processes》 被引量: 48...
Phenols and aromatic acids were analysed in polluted river waters in the Tokyo area and in water from an unpolluted river, brook, reservoir and in pond wat... Genki,Matsumoto - 《Water Research》 被引量: 139发表: 1982年 Estrogen responses in killifish (Fundulus heteroclitus) from polluted and...
Pollutants can come from a variety of sources including water discharge, road run-off, shipping and construction. However, according to Transport Canada, the largest contributor has been the industrial activity in the area. “There has been a long history of industrial activity in Victoria Harbour...
摘要: Enzen Globalolutions,n energynd environmentonsultingndusinesservicesompany is planningo putp 'barge-mounted'rloatingolar power plantsn polluted lakesnd irrigation ponds in Kamataka in partnership with different Governmentr private entities whownhe waterodies....
12. All the materials at the restaurant come from the unpolluted Wutela Prairie in Inner Mongolia. 酒楼所用原料全部来自无污染的内蒙乌拉特大草原, 菜品上乘,口味齐全。 youdao 13. Methylmercury concentration of river water was similar to that of unpolluted lake water of Canada. 三峡库区江段江水甲基...