Which type of UV rays are known for causing skin burning, aging, and cancer?

UVB rays are specifically known for their role in causing skin burning, aging, and cancer. These rays have a shorter wavelength than UVA rays and are primarily responsible for the sunburns that can occur after excessive sun exposure. Additionally, UVB rays penetrate the outer layer of the skin and can damage the DNA in skin cells, which is a crucial factor in the development of skin cancer.

While UVA rays can also contribute to skin aging and have been linked to some types of skin cancer, their primary effects are more related to deeper skin damage and photoaging, rather than the immediate burning sensation caused by UVB exposure. UVC rays are mostly absorbed by the Earth's atmosphere and do not typically reach the skin, while UVR rays is a broader term that includes both UVA and UVB rays but does not specify the particular effects associated with each type. Therefore, UVB rays are notably recognized for their direct connection to burning and associated skin damage.