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. Ground level or bad ozone is not emitted directly into the air, but is created by chemical reactions between oxides of nitrogen (NOx) and volatile organic compounds (VOC) in the presence of sunlight.
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.