The core of a comet is composed of
A. molten iron
B. liquid hydrogen
C. frozen gases and dust
D. uranium
Answer: C
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Examples of economic services that oceans provide are
a. Employment b. waste treatment c. climate moderation d. employment and climate moderation e. employment, food and pharmaceuticals
What are the pros and cons of the Green Revolution as a means of increasing South Asia's food supplies? What are the advantages and disadvantages of irrigated agriculture in India and Pakistan? What is the outlook for the next decade?
What will be an ideal response?
The category of economist that has taken the middle ground in the debate about economic growth, and believes in fine-tuning economic systems and tools, is the
a. ecological economist b. environmental economist c. neoclassical economist d. neoconservative economist e. high-throughput economist
Geopositioning technology ________
A) typically uses receivers larger than filing cabinets B) is widely used for making maps C) has never been commercially successful D) began in the 1920s E) is another term for the drawing of isolines