Mr. bellazono, a fisherman in his late sixties, comes to the clinic to complain of small ulcers on both forearms as well as on his face and ears. although he has had them for several years, he has not had any other problems. what is the likely diagnosis, and what is the likely cause?

coal is not sustainable because it will one day run out.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.