Depending on the area seen in an individual picture, brown, yellow and green continents can be seen or parts of Earth can be covered by white clouds. Earth is by far the most dynamic planet when seen from space.
Oxygen therapy is a medical treatment. It must be prescribed by a doctor. For people with COPD, oxygen therapy can be a helpful part of their treatment plan. The prescription your doctor writes will include: If you need oxygen for rest, exercise and/or sleep, and how much in liters per minute (lpm) for each activity.
Oxygen therapy is a medical treatment for those with COPD and other pulmonary complications that prevent them from being able to breathe in enough Oxygen (O2) on their own. Oxygen therapy includes the use of an oxygen tank or concentrator that provides oxygen to the user through a tube and nasal cannula.