Copper is one of the most abundant transition metals in the Earth's crust. The electricity industry is one of the largest consumers of copper because it is the best cheap metal for electricity transmission, and also has a special standard compared to other transmitters. Consuming or inhaling large amounts of copper can result in copper toxicity, also known as copper poisoning. Bronze is an alloy of copper and tin, but other elements such as aluminum, phosphorus, or silicon can also be added. Copper recycling helps conserve natural resources. Metal is a term used to describe a class of chemical elements that exhibit certain properties and characteristics. Metals are excellent conductors of electricity. Metals have attracted human attention for centuries because people were able to use metals to make high-performance tools that they used in both warfare and logistics. In the 20th century, the discovery and extraction of oil in the Middle East transformed the region's economy. West Asia has a geologically diverse landscape that has undergone complex geological processes over millions of years. Chad is a country located in Central Africa. Chad is a country with a very underdeveloped economy and depends mostly on its natural resources, such as oil, gold and uranium. Chad's important economic sectors include agriculture, mining, oil industry and construction industry. Also, trade and export are also important in Chad. The products that Chadian traders import and export to other countries may include food, household appliances, electronic products, toiletries, sporting goods and other products.
