The heavier sand would sink and the lighter wheat grains were left floating.
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The protein is found in wheat and related grains that are food staples in large parts of the world.
They eat corn, cereals, wheat and other feed grains and they eat quite a lot.
If you eat anything that contains one of a range of grains (wheat, barley, rye, and even oats), you will suffer bloating, headaches, and digestive problems.
"I believe one of the problems is over consumption of gluten-containing grains, especially wheat, and the fact that it is genetically different from ancient wheat, " says naturopathic physician Hamish Everard.
Corn futures prices on the Chicago exchange have risen about 50 percent since mid-June, hitting all-time record levels last month, and other grains such as wheat and soybeans are also sharply higher.
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Often, they must spend half or more of their income on food, the bulk coming from staple grains like corn, wheat and rice.
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Around 10, 000 years ago wheat evolved from goat grass and other primitive grains.
Gluten is found in wheat, rye, barley, and hybrids of these grains.
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To eat the wheat, the monkeys would have to pick out the grains one by one from thousands of particles of sand.
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Anti-GMO campaigners are clearly positioning themselves for another offensive against a new wave of GM crops and foods, with new pesticide tolerant grain varieties and a host of nutritionally enhanced grains, such as Golden Rice and drought resistant wheat, in their crosshairs.
The small amount of animal protein eaten on Crete is cooked in olive oil and usually made with greens, grains or pulses: sea bass with purslane, pork with cracked wheat, chicken with peas.
According to the American Diabetes Association , the best way to identify healthy grains is to look at the ingredient list and make sure the first ingredient in starchy foods is whole wheat flour, brown rice, rye flour, barley or oats.
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