Only 16 or so elements are truly essential for plant growth. The rest of the elements present in plant tissue are largely taken up in small quantities incidentally (or accidentally!) as plants take up the nutrient elements that they need for growth and reproduction.
Turkey has the largest economy in the region, followed by Saudi Arabia and Iran. Petroleum is the major industry in the regional economy, as more than half of the world's oil reserves and around 40 percent of the world's natural gas reserves are located in the region.
Quick Answer. Two major natural resources found in the southeast U.S. are pine and coal. Coal is mined and used to produce heat, light and various other forms of energy. Fertile soil is another valuable natural resource in this region of the U.S. This rich soil allows farmers to grow crops which support the life of many people and animals. Agriculture is a large part of the region since warm temperatures and heavy rainfalls allow the crops to flourish.