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.
Kazakhstan Natural Resources. Kazakhstan has over 90 kinds of natural resources, thanks to a very favorable geographical position of the country that translates into a very diverse geological composition, offering geological materials with a long period of formation, from the ancient Archaean deposits to recent quaternary deposits.