Which element in smoke contains most of the cancer-causing substances?

Question

Quizplus · Accepted Answer

Tar contains most of the cancer-causing substances in smoke. Tar is a sticky and thick substance that coats the lungs and contains numerous toxic chemicals, including carcinogens. It is responsible for causing lung cancer and several respiratory diseases. Carbon monoxide, nicotine, and carbon dioxide are harmful chemicals in smoke, but they do not contain as many cancer-causing substances as tar.

Which Element in Smoke Contains Most of the Cancer-Causing Substances