They can receive their funding from donations or a normal economic activity, with the difference being that all their revenue goes back into the function of the organisation.
Some services provided by non-profit are education and medical care, especially for the poor. An exemple is the Doctors Without Borders organisation.
If a 53 year old patient is brought to the ER via an ambulance, where you are working as nurse. You will check his vitals and see what his symptoms are. If the patient has labored breathing and also has a fruity odor to his breath, and also has Type 1 diabetes this is a serious condition. The patient is most likely ketoacidosis. This can come on suddenly without warning and can be a life threatening condition. The body's cells are unable to get glucose during ketoacidosis.