How Tobacco Smoke Causes Diseasesby
and more than 70 cause cancer. Tobacco smoke itself is a known human carcinogen.
• Chemicals in tobacco smoke.... Nearly one-third of all cancer deaths every year are directly linked to smoking. Smoking causes about 85...
Ozone Ground Level – Causes & Dangersby
in the lower atmosphere, which is also known as 'ground level ozone'.
Ground Level Ozone and the cause... pollutant, although experts have little data to verify the extent it causes harmful effect as compared...