Answer:
.
Explanation:
Basal cell carcinomas occur most frequently on exposed parts of the body, including the face, ears, neck, scalp, shoulders and back.
Squamous cell carcinomas often arise from small, sandpaper-like growths called actinic keratoses. They may appear as nodules or red, scaly patches of skin.
Melanoma may suddenly appear without warning, but it may also begin in, or near a mole, or another dark spot in the skin. Excessive sun exposure, particularly sunburn, is thought to be the most important cause of melanoma.
