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.
List of Top 10 Countries with Most Natural Resources in the World. By means of Natural resources, Russia is the richest country in the world. Its total sources make it the richest country having the value of $75 trillion. Gas and Timber reserves are the major sources of its earning.