Photoionization Detectors (PIDs) are the easiest and most efficient way to detect VOC levels. Although not as selective without the use of a gas chromatography column, a stand alone PID provides real time measurement of total volatile organic compounds in a portable format that anyone can use.
Ethnic: natural community of men with racial, linguistic, religious or cultural affinities. Understand that Native Americans is not a race but an ethnicity. The race of the native Americans of all the American Continent is Mongoloid.The paleoanthropological and genetic evidence demonstrates that approximately 14,500 years ago the Mongoloids crossed the Bering Stretch.re you referring to American Indians or Indians from India, In either case there is your answer Historically, India Indians are of the Caucasoid race, while Native Americans â¦ are of the Mongoloid race. Of course today, there is no biological basis for race. 3 people found this useful.
As of year 2000, the largest groups in the United States by population were Navajo, Cherokee, Choctaw, Sioux, Chippewa, Apache, Blackfeet, Iroquois, and Pueblo. In 2000, eight of ten Americans with Native American ancestry were of mixed ancestry. It is estimated that by 2100 that figure will rise to nine out of ten.ome 44,000 Native Americans served in the United States military during World War II: at the time, one-third of all able-bodied Indian men from 18 to 50 years of age.