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(a) How many million year ago, gigantic reptiles used to dominate on earth ? Give their common name and also mention the period and year in which they were predominanat on earth. (b) Why did these gigantic reptiles disappear from the earth in a short duration ? (c ) Name the most advanced living reptiles. List atleast two characters in which they resemble in mammals.

Match List I with II and select the correct answer using the code given below the Lists : {:(,"List I",,"List II"),(,("Magnet"),,("Property")),(A.," Artifical magnet",1.," Long lived"),(B.," Permanent magnet",2.," Last for infinitely long period"),(C.," Temporary magnet",3.," Short lived"),(D.," Earth as a magnet",4.," Induced magnet"):}