.What might happen to cells with DNA that has been damaged by an environmental influence such as UV light from the sun or a tanning bed?

It can lead to melanoma or a time of skin cancer.

Explanation:

This is because UV radiation in sunlight can destroy the DNA by destroying the base pairing. UV light will cause two Thymine that are very closer to each other to join together to produce dimer. After which, The melanin-assisted process form lesions that is popularly called cylobutane pyrimidine dimers in DNA, which can result in mutations that cause melanoma which is a form of skin cancer

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