PLUS Loan Interest Rates. Interest rates on Parent PLUS and Grad PLUS Loans are the same. Students attending graduate school and professional school were first able to borrow the Grad PLUS Loan in the 2006-2007 academic year.
Neptulon is the strongest Elemental Lord, Al Akir is the weakest. Ragnaros was never killed just banished back to his realm, the Fire lands, any multidimensional being is generally beyond the ability of mortals (us the players) to truly kill a permanent kill.
The Chaos Elemental is the strongest monster found in the Wilderness and it is highly recommended that you only attempt to fight it with items you are willing to lose due to the risk of encountering Player Killers and the difficulty of getting back to your items if the Chaos Elemental itself kills you due to its remote location.