What is the age range between sensor, preoperational ,concrete , operational and formal operations of learning

Now think of ways in which using healthcare services effectively can foster your health and ways in which not being aware of them is a health risk

How can mental health issues have an impact on a person’s career?

Health is as much a social as a biological concern. analyze whether or not healthcare is equally accessible to people belonging to all strata of american society. what steps has the us government taken to address this problem? suggest one measure that can lead to a comprehensive solution to this problem.