Currently, approximately 17% of electricity worldwide is produced by nuclear power plants, but in some countries, like France, over 75% of their electricity is produced by nuclear power (How Stuff Works). The United States, on the other hand, only produces about 15% of the electricity from nuclear power. Nuclear power plants use pellets to fuel the plants. A pellet contains approximately 3% U-235 that is encased in a ceramic matrix. Refueling the Reactor Core. Source: P. A. Scholle & D. S. Ulmer-Scholle, 1997, SEPM Photo CD-14, Environmental Sciences 5, SEPM, Tulsa, OK.
Definition of cervix. plural. cervices. play \ËsÉr-vÉ-ËsÄz, (Ë)sÉr-ËvÄ«-(Ë)sÄz\ or. cervixes. 1 : neck; especially : the back part of the neck. 2 : a constricted portion of an organ or part; especially : the narrow outer end of the uterus.
Cervical cancer is cancer that starts in the cervix. The cervix is the lower part of the uterus (womb) that opens at the top of the vagina. Worldwide, cervical cancer is the third most common type of cancer in women. It is much less common in the United States because of the routine use of Pap smears. Cervical cancer starts in the cells on the surface of the cervix.