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.
STRATOSPHERIC OZONE DEPLETION Ozone depletion is a global problem that is caused by human activities. This newmodule in the Global Change Instruction Program describes the chemistry of ozone,how ozone destruction is attributed to human activity, and what society is doing toavert further damage to the ozone layer.TRATOSPHERIC OZONE DEPLETION Ozone depletion is a global problem that is caused by human activities. This newmodule in the Global Change Instruction Program describes the chemistry of ozone,how ozone destruction is attributed to human activity, and what society is doing toavert further damage to the ozone layer.