Respuesta :

Cells exposed to environmental factors known to cause mutations in genetic material will become cancer cells

Explanation:

Environmental factors like radiation and high concentration of chemicals are among the factors that cause mutation in the genetic material. Internal genetic changes causes mutation in the genetic material, the DNA there are many chances of the mutated gene to convert into an Oncogene.

An Oncogene is a genetically mutated gene which causes tumor. The mutated gene causes proliferation of cells. More than 90% of the cancer is caused by the carcinogenic substances present in the environment.