What are the determining factors that bring changes in population?

Is it ok for your junk to be 17inches in diameter and this is school related

Explain how electronic health records reduce medical errors, increase the quality of care provided to patients, and bring down health care costs

Felicia has a respiratory infection and has been coughing up a lot of mucus. she knows this means that her respiratory system is working to restore balance by getting rid of the invasive materials from her lungs. how does this happen?