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.
Air pollution leads to ozone pollution and acid rain. CFC compounds, used in aerosol sprays prior to 1995, destroy the ozone layer. Ozone pollution can cause damage to human respiratory tracts. Ozone can damage the vascular system of plants.
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.