81.   Such alterations occur when chemicals in tobacco smoke fuse with genes in the DNA of lung cells.

82.   Tar is a byproduct of tobacco smoke that, when inhaled, helps deliver nicotine to smokers.

83.   The effects of environmental tobacco smoke, radiation, climate change, and food quality and safety on children will also be discussed.

84.   The effects of secondhand tobacco smoke on pregnant women are also passed to the fetus, Knippenberg said.

85.   The forum has recommended that steps be taken to safeguard the right of nonsmokers to live in an environment free of contamination from tobacco smoke.

86.   The mouth is particularly susceptible because it receives the brunt of the hot, irritating and toxic substances contained in tobacco smoke.

87.   The Ministry of the Environment said the latest crackdown is designed to protect non-smokers from the harmful effects of second hand tobacco smoke.

88.   There is a nearly empty glass before him and a cloud of tobacco smoke shrouding the table.

89.   They also reported that tobacco-specific carcinogens are found in the blood and urine of nonsmokers exposed to environmental tobacco smoke.

90.   There is a nearly-empty glass before him and a cloud of tobacco smoke shrouding the table.