What are the advantages and disadvantages of WTE combustion?
What will be an ideal response?
The advantages of WTE facilities include reducing trash weight "by over 70% and volume by 90%," concentrating toxic or hazardous substances into two streams of ash, eliminating the need to change "trash collection procedures or people's behavior," and generating electricity.
The disadvantages include MSW not burning cleanly, adverse health effects ("especially from older or poorly managed facilities"), cost to build the WTE facility, hazardous characteristics of the ash, options for MSW reduced, and resource and energy loss.
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Jean, who weighs 800 N, stands at rest on two bathroom scales in such a way that one scale reads 500 N. The other scale reads
A. 400 N. B. 200 N. C. 300 N. D. 800 N. E. none of the above
Why does withdrawal of fluids sometimes lead to subsidence?
A) The smaller amount of water leads to greater chemical weathering. B) The water holds subsurface caverns open. C) The fluid pressure provides partial support for the overlying rock mass. D) The water adds weight to the mass of Earth materials.
A scientific law describes the relationship between several different hypothesis.
Answer the following statement true (T) or false (F)
Rocks at the bottom of a sequence cannot be deformed if overlying rocks are not deformed.
Answer the following statement true (T) or false (F)