Pollution refers primarily to the of air, water, and land by wastes._
举一反三
- 酸雨是属于什么污染 A: water pollution B: air pollution C: soil pollution D: noise pollution
- The most important environmental risk factor in low- and middle-income countries is?() A: None of the above B: Unsafe water C: Outdoor air pollution D: Indoor air pollution
- If your speech is on environmental problems, what kind of subtopic might be relatively new and novel?( ) A: air pollution B: visual pollution C: noise pollution D: pharmaceutical pollution E: thermal pollution F: water pollution
- Air pollution is becoming worse. As is known to all, air to us is ________ water to fish. No one can imagine how human being can live without air.
- This passage is primarily concerned with _____. A: the greenhouse effect B: the burning of fossil fuels C: the potential effect of air pollution D: the likelihood of a new ice age