Answer:
A carcinogen is any substance that promotes carcinogenesis, which is a type of deadly cancer to humans so essentially you are asking why a cancer-causing substance is dangerous...
Carcinogens cause genetic abnormalities that become tumors. So I suppose they are really dangerous because they heavily increase the likelihood of developing cancerous tumors :)
Answer:
Carcinongens usually can cause the change in the genetic information (DNA) which leads to mutation. The mutation can make the organs out of control of reproduction and cause cancer.
Explanation:
Carcinogens can be chemicals, or anything that induce cancer.
