Describe the NRCS Soil Taxonomy
What will be an ideal response?
The U.S. soil classification system, Soil Taxonomy, was first developed in 1975. The basis of the Soil Taxonomy system is field observation of soil properties and morphology. The Soil Taxonomy is a hierarchical system with six categories. The lowest and more precise level of the classification system is a soil series. An estimated 15,000 different soil series are identified. Sequentially higher-level categories are soil families (6,000), soil subgroups (1,200), soil great groups (230), soil suborder (47), and soil orders (12). The system is open to addition and modification as the soil sampling database grows. The soil survey also recognizes the importance of anthropogenic influences on soil.
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Deposits made directly by a glacier consist of
a. clay. d. silt. b. well-sorted sediment. e. poorly sorted sediments. c. sand.
What is the cold water phase of ENSO?
A. the Walker Circulation B. El Niño C. La Niña D. the PDO E. the NAO
Which of the following is NOT an example of the "vibrant internationalism" of the capitalist countries of East Asia?
A) Most Japanese study English for 6 to 10 years. B) Action films from Hong Kong are popular in much of the world. C) Business meetings among Japanese, Chinese, and Korean firms are often conducted in English. D) Relatively large numbers of advanced students from East Asia study in the United States and other English-speaking countries. E) North Koreans maintain an isolationist position.
China's large population has traditionally been supported by
A. a millet-based agricultural system. B. fertile alluvial soils and adequate water for the cultivation of staple cereals. C. an abundance of minerals such as coal. D. the growth of urban areas.