41. By 1990, biological factors were being reported for a wide variety of human behaviors and personality characteristics. 42. The biomedical model of health focuses on purely biological factors and excludes psychological, environmental, and social influences. 43. When attempting to discover the biological factors that influence mood, it is difficult to find scientific proofs. 44. I would bet a million dollars that there are going to be biological factors involved in sexual orientation. 45. And biological factors that predispose people to the disease or protect them from it are not well understood. 46. Gurian's emphasis on biological factors puts him at odds with several other authors of recent books on boys. 47. For more information on such research, see Gender role # The influence of biological factors on gender roles. 48. That is just a biological factor . 49. By using known data of preexisting invasive species GIS models could predict future outbreaks by comparing biological factors . 50. "It's not at all clear that biological factors influencing sexual preference in sheep are the same as in humans.
