What are the four major types of coal, and which is the most valuable? What will be an ideal response?
The types of coal include bituminous, lignite, subbituminous, and anthracite. Anthracite is the best
because it burns more cleanly and efficiently than the other types.
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America's largest estuary, the ____________________, has greatly reduced shellfish and fisheries harvests due to a high population, nonpoint source pollution, and the resulting eutrophication.
Fill in the blank(s) with the appropriate word(s).
Examine these atomic models and answer the question that follows. The filled black circles represent electrons. (Note: Electrons and nucleus are not drawn to scale.)Assuming that the number of electrons is the same as the number of protons (which is not always the case), which picture represents the atom of carbon that has an atomic number of 6?
Automated Surface Observing Systems (ASOS) measure
a. wind speed and direction. b. cloud patterns. c. sun angles. d. likelihood of flooding. e. likelihood of lightning strikes.
Why are short-term solutions often offered to achieve sustainability? Why must sustainable solutions work in the long term? Why does the current political system inhibit our ability as a community to work on long-term solutions, and how can citizens
change this? What will be an ideal response?