Oxygen essay 2

Actually, pure oxygen has a lot of uses in our lives and the society. First of all, it is important to understand how oxygen is formed in the atmosphere. In fact, a lot of processes contribute to the amount of oxygen level in the atmosphere. Oxygen originally reaches the earth from all parts of the universe in the form of meteorites.

Now oxygen is balanced within the atmosphere. The four main processes that use atmospheric oxygen are: Breathing – It is the physical process, through which all living organisms, including plants, animals and humans inhale oxygen from the outside environment into the cells of an organism and exhale carbon dioxide back into the atmosphere.

The amount of oxygen found in water is called the dissolved oxygen concentration (DO). DO is a very important measure of the health of a stream--the presence of oxygen in water is a positive sign, the absence of oxygen in the water is often a sign that the stream is polluted. Dissolved oxygen levels vary

Oxygen therapy is the process in which the oxygen is forcefully inserted into the lungs of a patient with the help of a mask or by a tube inserted through the nose of the patient. Oxygen is important for the survival of all the living organisms.