Irish stepdance traditional step dance in Munster. This style is largely performed on the balls of the feet with toes pointed outwards. Competitive dancers are judged on posture, timing, rhythm and execution, which in practice means a rigid torso, rapid and intricate footwork, and legs and feet crossed over each other, with knees close together. Irish stepdances can be placed into two categories. Solo stepdances, which are danced by a single dancer, and group stepdances, which are coordinated with 2 or more dancers. "Reel", "slip jig", "hornpipe", and "jig" are all types of Irish stepdances and are also types of Irish traditional
Solar activity and climate irradiation increases with part of twentieth century warming. Three mechanisms are proposed by which solar activity affects climate: Climate models have been unable to reproduce the rapid warming observed in recent decades when they only consider variations in total solar irradiance and volcanic activity. Hegerl "et al." (2007) concluded that greenhouse gas forcing had "very likely" caused most of the observed global warming since the mid-20th century. In making this conclusion, they allowed for the possibility that climate models had been underestimating the effect of solar forcing. Another line of evidence comes from looking at how temperatures at different levels