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.
Causes of Ozone Hole. The destruction of ozone layer is caused by one factor only which is Cholorofluorocarbons. The main cause of the ozone hole was found to be gases that contained Cholorofluorocarbons (CFCs), Halons and Freons.Found commonly in aerosol cans and released by many electronic appliances, these were seen to decrease the level of ozone in the stratosphere.t was noticed that there was a steady decline of the ozone in the stratosphere, which comprised of the ozone layer. They also noticed ozone depletion in larger amounts over the two poles of the earth, which is known as the ozone hole. A layer of gas called ozone sits up around 25-30 kms above the earthâs surface.