Final answer:
UV radiation is both germicidal and mutagenic. It can kill or inactivate microorganisms by damaging their DNA, and it can cause mutations in the DNA of living organisms.
Step-by-step explanation:
UV radiation is both germicidal and mutagenic. The germicidal property of UV radiation means that it can kill or inactivate microorganisms such as bacteria and viruses.
It does this by damaging their DNA and preventing them from reproducing. The mutagenic property of UV radiation refers to its ability to cause mutations in the DNA of living organisms, leading to genetic changes.