How many chemicals in tobacco products have been proven to cause cancer? A. 30
B. 60
C. 1,000
D. 4,000

When burned, cigarettes create more than 7,000 chemicals. At least 69 of these chemicals are known to cause cancer, and many are toxic.

Explanation:

The tobacco plant itself contains harmful chemicals right from the start, including highly addictive nicotine. In addition to nicotine, toxic chemicals like cadmium and lead are often found in the soil where tobacco plants grow, and fertilizers often contain nitrates.The tobacco plant itself contains harmful chemicals right from the start, including highly addictive nicotine. In addition to nicotine, toxic chemicals like cadmium and lead are often found in the soil where tobacco plants grow, and fertilizers often contain nitrates.Tobacco use causes many types of cancer, including cancer of the lung, larynx (voice box), mouth, esophagus, throat, bladder, kidney, liver, stomach, pancreas, colon and rectum, and cervix, as well as acute myeloid leukemia. Many of these chemicals also are found in consumer products, but these products have warning labels—such as rat poison packaging. ... Arsenic—used in rat poison.

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answer; (d) melting of sea ice;