Holy pickles there are a lot of techniques. In Ballet, you must turn out your foot, and point your toes, your knees should always be on top, keep your weight distributed, don't stick out your butt, pull up tall, "suck it in" as my ballet teacher says, and many more rules for different leaps, turns, and kicks. There are hundreds of things ballerina's need to do when dancing. The ones above are only a couple. I do not have enough room to explain all of the different techniques.
Ballet is used, how ballet is used!
no
The Italian, Russian and French
Probably fondu, plie, battement and tendu
Your pelvis is used in ballet..
Sometimes, but not a lot. Rarely are they used in ballet.
jazz is more of a rhythmic dance where as ballet is more of a graceful dance. Also the techniques and emphasis' are different and where they originated
Ballet is used all the time you just don't know it!
Ballet and Modern Interperative.
Ballet is still popular. Many people still do ballet, and others enjoy watching.
Russian is known for its many ballet companies. The two most famous ballet companies in Russia are the Bolshoi Ballet and Mariinsky Ballet. The Mariinsky Ballet used to be known as the Kirov Ballet.
Ballet is technical in the sense that you have to know a lot of specialized techniques in order to do it. Many other types of dance are either much simpler, or even if they are not simpler, they are more improvisational, and therefore do not require the dancer to master specific techniques.