http://ieltssimulator.com/wp-content/uploads/2020/09/Untitled-1-2-300x138.png 0 0 IELTS Simulator http://ieltssimulator.com/wp-content/uploads/2020/09/Untitled-1-2-300x138.png IELTS Simulator2023-03-20 10:00:552023-03-20 13:50:48IELTS READING – The Risks of Cigarette Smoke S49AT2
IELTS READING – The Risks of Cigarette Smoke S49AT2
IELTS READING S49AT2
The Risks of Cigarette Smoke
Discovered in the early 1800s and named nicotianine, the oily essence now called nicotine is the main active ingredient of tobacco. Nicotine, however, is only a small component of cigarette smoke, which contains more than 4,700 chemical compounds, including 43 cancer-causing substances. In recent times, scientific research has been providing evidence that years of cigarette smoking vastly increases the risk of developing fatal medical conditions.