A、They take longer to raise. B、They are sold on the Internet. C、They are more expensive. D、They are full of chemicals. D

On Thanksgiving Day, Americans will eat turkeys. Some of the birds will be fried in oil or heated over hot coals. Most will be cooked in the oven.
    Most farm-raised turkeys grow quickly. In 14 weeks, a female turkey weighs 7 kilograms and is ready for market. Hens are usually sold as whole birds. Male turkeys are usually grown for 18 weeks. They weigh more than 14 kilograms.
    Some farms have started to raise what are called heritage turkeys. These more traditional kinds of birds take longer to raise and require more care. Some can be ordered over the Internet. The meat is at least four times the cost of other turkeys. Often, heritage turkeys are raised on organic farms, where no chemicals are used.
    Two-thirds of the cost to raise a turkey is spent on load. Farmed turkeys cat a mixture d corn and soybean with added vitamins and minerals. It takes about 36 kilograms d food to raise a 14-kilngram bird.
    About 8 percent d turkeys raised in the United States are exported. Mexico is the top importer. American turkey production is valued at 3,000 million dollars a year.