Based on the diathesis-stress model schizophrenia is the result of interaction between environmental and biological/genetic factors. According to this model, when the combination of the predisposition (diathesis) and the stress (biological, social, and psychological stressors) exceeds a threshold, the person will develop a disorder.
The consumption rate, or the rate at which food and resources are consumed, is a large influential factor on a group's fertility rate
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The position of the seedlings from the Sun and the gibberling
