The main cause of pollution is ______.
A: the release of artificial or natural substances into the environment
B: the production of new industrial goods
C: increased amounts of a natural substance
D: our ever-increasing population
A: the release of artificial or natural substances into the environment
B: the production of new industrial goods
C: increased amounts of a natural substance
D: our ever-increasing population
举一反三
- The main cause of pollution is （） A: the production of new industrial goods B: increased amounts of natural substance C: our ever-increasing population D: the release of artificial of natural substances into the environment
- The main function of a industrial system is A: Promote the circulation of substance, energy and value in the industrial system B: Converting natural resources into services or products that meet specific human needs C: Affecting the natural surface environment system D: Affecting the spatial distribution of matter and energy on the earth's surface
- More natural resources should be made use of ___________ the ___________ need of energy.( ) A: meeting; increased B: to meet; increased C: meeting; increasing D: to meet; increasing
- Environment, resources and () are the three major problems facing<br/>human society today? A: substances B: population C: pollution
- According to the author, the main problem of our environment today is ______. A: the increase of population B: the limited energy resources C: the more serious air pollution D: the development of technology