Hubbert's peak oil theory suggests that petroleum is a finite resource that is rapidly depleting. The IMO has amended MARPOL Annex VI Regulation 12 regarding ozone depleting substances. We destroyed them by depleting their food supply, and making them starve to death. These minting operations were rapidly depleting the Treasury's stock of silver. Conservationists warn that gastronomic demand for frogs is seriously depleting regional populations. Ultimately, HIV causes AIDS by depleting CD4 T cells. This drug works by depleting dopamine. This ended up overwhelming the staff and quickly depleting supplies. The lawsuit, along with other factors, was depleting the resources of the Arizona Democratic Party. Conditions ending the game are depleting the vehicle's fuel or hitting the driving avatar's head. Wes is a mime with fast depleting hunger and low damage. Valens had left a sizeable guard with his baggage and treasures depleting his force. He states that in January 2010 his funds were "depleting gradually". Enron financed the re-purchase by depleting its lines of credit at several banks.