Column - Name of the column in question. The above query shows all tables that have more than one index with the same leading column. These indexes can cause queries to use an inappropriate indexes; in other words, Oracle will use the index that was created most recently if two indexes are of equal ranking.
Some different types of gases are argon, carbon dioxide, hydrogen,  helium, oxygen, nitrogen, nitrous oxide, propane and propylene. Carbon dioxide is used for fermentation, â¦ and oxygen and nitrogen  are what makes up the Earth's atmosphere.1 person found this useful. Jan C.tmosphere contains roughly (by volume) 78.09% nitrogen, 20.95%oxygen, 0.93% argon, 0.039% carbon dioxide, and small amounts of other gases.
In few words pollution is just destroying natural environment.they are of different types.air pollution,water pollution,sound pollution,soil pollution and so on.......onfidence votes 1. oxide. There are many different kinds of pollutants, but some of the more larger problems result from: Greenhouse gases-Carbon dioxide and methane are two of the most important of these gases, called greenhouse gases because they trap heat in the earth's atmosphere.