What principal involves an intrusive rock body younger than the rock into which it intrudes

The principle of cross cutting relationships states that the one structure which interrupts or cuts the other structure, the one which interrupts is the younger structure and the one which is being interrupted is the older structure.

The principle involving an intrusive rock body younger than the rock into which it intrudes is principle of cross cutting.

geologic time scale (for gradpoint) =)

answer >   yes we do, women; have three holes, urethral opening(pee hole, vagina, and the women pee/girls pee out of the urethra like the men do; only they have a single opening to pee/ejaculate.   (sorry if i'm too forward with this, but this is for a biology class, isn't it? )

hope that !         : )