21. Other than biological factors that contribute to aggression there are physical factors are well. 22. Evidence accumulated that biological factors did indeed predispose individuals to schizophrenia and other disorders. 23. "Part is nongenetic biological factors , but it's 100 percent biological. 24. Biological factors also contribute to the breakdown of certain pollutants.25. But there is some intriguing evidence that inborn biological factors could be at work. 26. Physical, climatic, and biological factors can contribute to endemism. 27. Zooplankton patchiness can also be influenced by biological factors , as well as other physical factors. 28. However there are several biological factors favoring the former. 29. This finding suggested a biological factor , which was then investigated further in the third study. 30. The type and amount of vegetation depends on climate, topography, soil characteristics, and biological factors .
