Most copper is mined or extracted as copper sulfides from large open pit mines in porphyry copper deposits that contain 0.4 to 1.0% copper. Examples include Chuquicamata in Chile, Bingham Canyon Mine in Utah, United States and El Chino Mine in New Mexico, United States. According to the British Geological Survey, in 2005, Chile was the top mine producer of copper with at least one-third world share followed by the United States, Indonesia and Peru. Copper can also be recovered through the in-situ leach process. Several sites in the state of Arizona are considered prime candidates for this method. The amount of copper in use is increasing and the quantity available is barely sufficient to allow all countries to reach developed world levels of usage.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What form is copper hidden?
Ah, so.. unanswerable

The expansion of mandolin use continued after World War II through the late 1960s, and Japan still maintains a strong classical music tradition using mandolins, with active orchestras and university music programs. New orchestras were founded and new orchestral compositions composed. Japanese mandolin orchestras today may consist of up to 40 or 50 members, and can include woodwind, percussion, and brass sections. Japan also maintains an extensive collection of 20th Century mandolin music from Europe and one of the most complete collections of mandolin magazines from mandolin's golden age, purchased by Morishige Takei.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What country still maintains strong classic music tradition with mandolin?
Ah, so.. Japan

The Atlantic coast of the United States is low, with minor exceptions. The Appalachian Highland owes its oblique northeast-southwest trend to crustal deformations which in very early geological time gave a beginning to what later came to be the Appalachian mountain system. This system had its climax of deformation so long ago (probably in Permian time) that it has since then been very generally reduced to moderate or low relief. It owes its present-day altitude either to renewed elevations along the earlier lines or to the survival of the most resistant rocks as residual mountains. The oblique trend of this coast would be even more pronounced but for a comparatively modern crustal movement, causing a depression in the northeast resulting in an encroachment of the sea upon the land. Additionally, the southeastern section has undergone an elevation resulting in the advance of the land upon the sea.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What made to see advance on the land in the southeasternAppalachian?
Ah, so..
unanswerable