At least 30 of these viruses can be sexually transmitted. HPV transmission occurs easily among sexual partners. This is evidenced by the fact that at least 50 percent of sexually active men and women acquire a genital HPV infection at some point in their lives.
A farm worker corrals cranberries in a bog during a harvest. Every schoolchild learns that the Pilgrims couldn't have survived life in the New World without the help of the Indians. The tribes taught them which crops to plant. They introduced them to corn and other nutritional mainstays. One of these, the American cranberry, is still part of the classic Thanksgiving feast.
Corn is believed to have been introduced across what is now the United States-Mexico border a few thousand years ago. The original corn plant known as teosinte is still grown in Mexico and its size (ears of corn) has substantially increased due to efforts of American Indians and scientific research.orn production (also maize production) plays a major role in the economy of the United States.