Complex sentence: Ionizing radiation works by damaging the DNA of exposed tissue, furthermore, it is believed that cancerous cells may be more susceptible to death by this process as many have turned off their DNA repair ability during the process of becoming cancerous.
Split into simpler sentences: Ionizing radiation works by damaging the DNA of exposed tissue. It is believed that cancerous cells may be more susceptible to death by this process as many have turned off their DNA repair ability during the process of becoming cancerous.