Lumber Pressure Treated With Chromated Copper Arsenate. Chromated copper arsenate (CCA) has been used extensively in this country as a wood preservative. CCA is composed of: copper, which acts as a fungicide; arsenate, a form of arsenic, which is an insecticide; and chromium, which binds the ingredients to the wood.
Devilâs Throat at Iguazu Falls in Argentina. Photo by: Luca Galuzzi, Creative Commons. Iguazu Falls, also known as Iguassu or IguaÃ§u Falls, are situated on the border of Argentina and Brazil. They touch the Parana region in Brazil and the Misione region from Argentina. The falls separate the river into upper and lower Iguassu.
Geography. 1  The city of Buenos Aires, the capital of Argentina, lies on the southern shore of the Rio de la Plata River in east-central Argentina. This largest city in Argentina covers 203 kmÂ² (78.5 sq mi) of land area while the metropolitan of Buenos Aires is spread over 4,758 kmÂ² (1,837.1 sq mi) area. Geographically, Buenos Aires city is situated in province of same name, but it is politically autonomous.