The optimal pH can be measured by looking at enzyme activity verses pH. Enzyme activity will increase up to a certain pH; above that pH, the enzyme activity will begin to fall.
The invention of the microscope is the answer.
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<span>The major function of bone marrow is to generate blood cells and the red is found in flat bones like the hip.</span>
Chest deformities can be responsible for the death of a person as well. These deformities result in the increase of pressure in the chest and build up of carbon dioxide. This carbon dioxide build up will always disrupt the flow or volume of oxygen that is required by a person. This results in a situation that is known by the term hypercapnia.