Carbon dioxide is an integral part of the carbon cycle, a biogeochemical cycle in which carbon is exchanged between the Earth's oceans, soil, rocks and biosphere.econstructions show that concentrations of CO 2 in the atmosphere have varied, ranging from as high as 7,000 parts per million during the Cambrian period about 500 million years ago to as low as 180 parts per million during the Quaternary glaciation of the last two million years.
Barium chlorate. Barium chlorate, Ba(ClO3)2, is a white crystalline solid, the barium salt of chloric acid. It is an irritant and toxic, as are all soluble barium compounds. It is sometimes used in pyrotechnics to produce a green color. It also finds use in the production of chloric acid.
Sources of barium. Barium can only be found combined with other elements, typically with sulfate and carbonate. Barium is prepared by electrolysis of barium chloride. The most significant compounds of the element are the peroxide, chloride, sulfate, carbonate, nitrate and chlorate.roperties of barium. Barium is a soft metal belonging to the alkaline earth metals group. It is silvery-white and oxidizes very easily. Its chemical composition resembles calcium [See Periodic Table of the Elements ].