Quick Answer. In some rare cases, excessive stress causes bleeding between periods. It is more common that another condition is responsible, such as pregnancy, polycystic ovary syndrome, infection, pelvic inflammatory disease or side effects of medication, according to WebMD.
Characteristics of Scientific Research. When researches progress to a certain degree, turning over to think about them in time will contribute to advance their process and make them develop healthily in correct direction. Therefore, let's have a look into the characteristics of our work macroscopically and generally.
SCIENTIFIC METHOD OF RESEARCH & ITS SPECIAL FEATURES. Research produces knowledge which could be used for the solution of problems as well as for the. generation of universal theories, principles and laws. But all knowledge is not science. The critical. factor that separates scientific knowledge from other ways of acquiring knowledge is that it uses. scientific approach.