Odawa operating from about 200BCE to 500 CE. Some of these peoples constructed earthwork mounds for burials, a practice that ended about 250 CE. The Saugeen mounds have not been excavated. The Odawa, together with the Ojibwe and Potawatomi, were part of a long-term tribal alliance called the Council of Three Fires, which fought the Iroquois Confederacy and the Dakota people. In 1615 French explorer Samuel de Champlain met 300 men of a nation which, he said, "we call "les cheueux releuez"" (modern French: "cheveux relevez" (hair lifted, raised, rolled up)) near the French River mouth. Of these, he said: "Their
Composition of the human body mass of the human body is made up of six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. Only about 0.85% is composed of another five elements: potassium, sulfur, sodium, chlorine, and magnesium. All 11 are necessary for life. The remaining elements are trace elements, of which more than a dozen are thought on the basis of good evidence to be necessary for life. All of the mass of the trace elements put together (less than 10 grams for a human body) do not add up to the body mass of magnesium, the least common of the 11 non-trace elements.