The blades are the most important part of a turbine: their design is crucial in capturing as much energy from the steam as possible and converting it into rotational energy by spinning the rotor round. All turbines have a set of rotating blades attached to the rotor and spin it around as steam hits them.
Gender variance is defined as the persistent sense that a person's gender identity is incongruent with the person's biological sex. The definition further excludes the element of persistence for persons under the age of 21 and including, without limitation, transitioned transsexuals.
Gender dysphoria, or gender identity disorder, is the distress a person experiences as a result of the sex and gender they were assigned at birth. In this case, the assigned sex and gender do not match the person's gender identity, and the person is transgender. There is evidence suggesting that twins who identify with a gender different from their assigned sex may do so not only due to psychological or behavioral causes, but also biological ones related to their genetics or exposure to hormones