What makes you unique : Your central nervous system consists of your brain and your spinal cord. Your peripheral nervous system includes the nerves throughout your body. Together they form your nervous system-both an internal network of connections and your sensory link to the external world.
Your brain develops rapidly in infancy and adolescence, but it continues to change throughout your life. The connections formed by your brain's neural pathways, which connect one part of your nervous system with another, continue to change as well. These pathways are very important for understanding depression.
Human variability, or human variation, is the range of possible values for any characteristic - physical or mental - of human beings.
Variation is inherent in all species, and is necessary to ensure diversity within the species, and thus the species’ survival over time. There are conflicting views on the attitudes towards variability traits according to each society that is rooted in cultural taste or local traditions. The variations that are often evaluated differently are mental abilities, body shape, and skin color. These variations may come from genetics, in the form of heritable traits obtained from parents, or from the environment, a factor of both prenatal health and subsequent lifestyle choices. Humans are said to have a higher degree of variation than most other species, and an increased awareness of variation, which has a significant societal impact in the way humans interact with and evaluate others.
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