Ultraviolet ________ rays may damage the DNA or genetic material within skin cells. It is also known to be responsible for most skin cancers.

Ultraviolet B rays may damage the DNA or genetic material within skin cells. It is also known to be responsible for most skin cancers.

Ultraviolet (UV) radiation from the sun is categorized into three types: UVA, UVB, and UVC. UVB rays have shorter wavelengths than UVA rays and are primarily responsible for causing sunburn as well as direct damage to the skin's DNA. This type of radiation is linked to the development of most skin cancers, including melanoma, basal cell carcinoma, and squamous cell carcinoma.

The damage arises because UVB rays penetrate the outer layers of the skin and can lead to mutations in the DNA of skin cells. Over time, repeated exposure to UVB rays can compromise the skin's ability to repair this DNA damage, increasing the risk of cancerous growths. Therefore, it is crucial to take protective measures, such as using sunscreen, wearing protective clothing, and seeking shade, especially during peak sunlight hours, to minimize UVB exposure and reduce the risk of skin cancer.