When continental crust collides with continental crust both are to buoyant to be subducted, as the two plates continue to push against each other it uplifts the crust with reverse faults and creates mountains.
Fluid retention scores (on a 0â4 scale) peaked on the first day of menstrual flow (mean Â± SE: 0.9 Â± 0.1), were lowest during the mid-follicular period, and gradually increased from 0.22 Â± 0.05 to 0.50 Â± 0.09 over the 11 days surrounding ovulation.
The vagina, or birth canal, provides a path for menstrual fluids to leave the body. During a period, there are usually 2-3 days of relatively heavy bleeding followed by 2-4 days of lighter flow. The fluid during a menstrual period is a mixture of uterine lining tissue and blood.The total mo nthly menstrual loss varies from about 4 to 12 teaspoons.he first menstrual period is called  menarche .. The menstrual cycle is about four weeks long, starting on the first day of bleeding and ending when the next period begins. However, it can vary greatly when a girl first starts her period.