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With this study, we have found that people who smoke a pack a day develop an average of 150 extra mutations in their lungs every year, which explains why smokers have such a higher risk of developing lung cancer. Cancer is caused by mutations in the DNA of a cell

by burning any readily available slow-burning waste-materials like, tobacco-stalks, paddy-husk, sugarcane-trash, etc

Figure 1.3 Nicotine absorption into the bloodstream from the lungs

I have updated the post to add all new photos, and more information about Manduca sexta.

Source: Land Degradation and Development Journal, Volume 28, Issue 8 Deforestation has wide-reaching effects, threatening plant and animal diversity and whole ecosystems, leaching soil nutrients, and spilling toxic pesticides and fertilizers into soil and water systems