One reason you may wish to estimate your travel time is so that you can inform others of your expected arrival time. True

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The mesophyll chloroplast and thylakoids

Answer; ovulation is the release of eggs from the ovaries, in humans this event occurs when the follicles rupture and release the secondary oocyte ovarian cells, after ovulation during the luteal phase, the egg will be available to be fertilized by sperm, the uterine lining (endometrium) is thickened to be able to receive a fertilized egg, if no conception occurs, then the uterine lining as well as blood will be shed during (menstruation);