Well ,in sceince subject a person have a clear concept about each topic . I have a good hold particularly on life sceince and has good command on various areas of that subject like genetics , human and animal physiology ,cell biology , biochemistry and biotechnology as well . I believe a best teacher are those who is capable to provide good environment in class so that a student teacher interaction would enhance that is one way to clear concept of students and in sceince , a teacher always has good hold on diagramtic presentation so that students easily understand the topics .