Persistent worries about Europe's debt-riddled countries are driving down prices for most commodities.
Oil fell 4 percent Monday. Gold, silver and copper also finished lower. Streaks for record-setting high prices for corn and soybeans also snapped.
Spain is facing a deepening recession. Its borrowing costs are surging because of questions about its ability to repay debts. There also are concerns about financially troubled Italy and Greece.
Commodities investors worry that Europe's problems will continue to cut into demand for oil, industrial metals, grains and other raw materials.
Commodities also were hurt by a stronger dollar. Commodities are priced in dollars so a stronger dollar makes them more expensive for traders who use other currencies such as the euro or yen.