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.
Design for the conduct of scientific research in education. The committeeâs discussion of research design is developed around three themes: 1. A variety of legitimate scientiï¬c approaches exist. Research designs. evolve, as do the questions they address, the theories they inform, and. the overall state of science.