What is the term for various positive and negative factors such as lack of shelter, fertile farmland, or an abundance of natural resources that cause a group of people to either leave their homeland and be drawn to another region? A pro and con factors

B drawing and retracting factors

C push-pull factors

D positive and negative factors

the answer is migration

whole lotta ptsd going on

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health care plans in the united states having high costs because they are focusing on providing quality programs for different groups of individuals. the quality of the service is based on money flow received from the members. without this investment, couldn't be possible a constant scientific searching to prevent death and illness caused because of low levels of health investigation. currently, the complaints are not about the highest cost, but about the coverage and benefits to access the necessary health services required by the members.  

besides, if a global health system is established the quality levels will fall down because of the standardized of the health. the access to care will increase but the quality will be low because it depends on the money invested.