Đang chuẩn bị nút TẢI XUỐNG, xin hãy chờ
Tải xuống
Encyclopedia of Global Resources part 29 provides a wide variety of perspectives on both traditional and more recent views of Earth's resources. It serves as a bridge connecting the domains of resource exploitation, environmentalism, geology, and biology, and it explains their interrelationships in terms that students and other nonspecialists can understand. The articles in this set are extremely diverse, with articles covering soil, fisheries, forests, aluminum, the Industrial Revolution, the U.S. Department of the Interior, the hydrologic cycle, glass, and placer mineral deposits. . | 250 Copper Global Resources geared toward improving the water productivity in river basins. The emphasis of the program is to create synergies and partnerships among the stakeholders in ways that are pro-poor gender equitable and environmentally sustainable. Since the 1970 s climate change has been a research area of interest to CGIAR scientists. They have been working on the effects of climate change on natural resources including water resources and developing crop varieties that can continue to provide the needed food to an ever-growing world population. The scientists have also been active in identifying policies and new approaches for communities to deal with climate change and its consequences. All these years of research have led to the release of improved crop varieties new farming techniques and crop production methods and the development of policies to help rural populations especially in developing countries manage natural resources in a sustainable way. Lakhdar Boukerrou Web Site Consultative Group on International Agricultural Research http www.cgiar.org See also Agriculture industry Agronomy Greenhouse gases and global climate change Land Institute Land-use planning. Copper Category Mineral and other nonliving resources Where Found Copper deposits are found in several types of geologic environments. Most common are the porphyry copper ore deposits that formed in magmatic arcs associated with subduction zones. These types of ores are found in Canada the western United States Mexico Peru and Chile. Other important copper deposits were formed by different processes and are found in central Europe southern Africa Cyprus Indonesia andJapan. Primary Uses The major uses of copper are in the electrical industry because of the substance s ability to conduct electric ity efficiently. Copper is also utilized extensively in the construction industr y especially for plumbing. Most of the remaining copper is alloyed with other metals to make bronze with tin brass .