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.
Each of those oxygen atoms then binds with an oxygen molecule to form an ozone molecule. Depletion of stratospheric ozone poses serious health risks for humans and environmental hazards for the planet, and many nations have banned or limited the use of chemicals, including CFC, that contribute to ozone depletion. The Origin of Bad Ozone. Ozone is also found much nearer the ground, in the troposphere, the lowest level of Earthâs atmosphere. Unlike the ozone that occurs naturally in the stratosphere, tropospheric ozone is man-made, an indirect result of air pollution created by ...