Transitions in sentences create internal coherence, while transitions between paragraphs create coherence?

I believe the answer is external coherence.

I know no other answer than external. It is the most sensible.

Internal coherence is important to be sure that the story makes sense and can be run in isolation. External coherence is how it relates into the wider narrative of change and the world around us.

Hope that helps!

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.

food chain i would say only because there is competition on getting food and survival