Question : When a female child is born, her ovaries already contian thousands of immature eggs (or ova) contained in immature structures A. On maturing, A bursts opne and and egg shootscut of the ovary in a process called B. The proces B starts in the female aftera time period x. Before every occurence of processs B, the inner lining of uterus becomesthick and soft withlots of blood vessels in it. When the egg cell gets ferilised by a sperm, then an event C ocures in the life of mature human female which lasts for time period y leading to the birth of baby. If however, the egg cell released by theovary does not get a sperm to fuse with, then the thick and soft inner lining of uterus breaks down and comes out of the female's body in an event called D. The occurrence of event D is controlled by chemical substances E. (a) What are A? (b) What is process B ? (c) What is the time period x? (d) Name the event C. (e) How muchis the period y ? (f) What is the name of process D? (g) Name the chemical substances E.