Life is a boon to every living kind. It has been the system of nature that one depends upon others for their survival. The dependency can be in different format. It can be either for the food, support, and different other variables. Humans being the social creature are dependent upon one another for their survival. The dependencies are upon the biological and physical needs of people. One helps other upon their survival fulfilling their needs at various different levels.
Human body is composed of different organs sharing common features with other bodies. Unlike some organs, different biological units are classified ...