[Solved] In the context of sexual intercourse, which of the following is true of anal eroticism? A) It is regarded as masculine for both gay partners. B) It is not practiced by heterosexual couples. C) It helps couples visualize the energy of the genitals moving upward in their bodies. D) It is less risky than most other forms of sexual interaction. Cleavage: A geological term referring to the tendency of minerals to break along specific planes of weakness due to their crystal structure. Silicon Tetrahedron: A structural unit in silicate minerals, consisting of four oxygen atoms surrounding a silicon atom in a tetrahedral shape. Cleavage: The tendency of a mineral to break along flat surfaces as determined by the mineral's crystal structure. Silicate Mineral: Minerals that contain silicon and oxygen, and sometimes other elements, which make up the majority of the Earth's crust.