Calf Muscles. 1  The calf muscles are six in number: the gastrocnemius, the soleus, the popliteus, the tibialis posterior, the flexor digitorum longus, and the flexor hallucis longus. 2  The gastrocnemius and the soleus run between the knee and the ankle. 3  One of the calf muscles, the soleus, has a special ability.
Ozone pollution is a form of pollution which is characterized by high concentrations of ozone, a form of oxygen, at ground level. Exposure to ozone can cause serious health problems in plants and people, and ozone pollution is a major problem in some regions of the world. It tends to increase during periods of high temperatures and sunny skies, which is why bad air advisories are often issued on seemingly nice days.
The hole in the ozone layer in the earthâs upper atmosphere (stratosphere) reduces the greenhouse effect because ozone is a greenhouse gas.However, ozone is needed in the stratosphere where it occurs naturally to filter out harmful ultraviolet radiation from the sun.Ozone in the lower atmosphere (troposphere) is created by chemical reactions between pollutants and sunlight.zone in the troposphere is dangerous to human health because it can cause lung damage and other cardiopulmonary problems when breathed. Substances that deplete ozone in the stratosphere are regulated under the Montreal Protocol.