A backfire is when the ignition of fuel doesn't take place in the ignition/combustion chamber, it(a backfire) can take place in the intake or exhaust. It can â¦ be caused by a fuel to air ratio not being correct, also if the timing of the spark is not just right that could cause it to back fire.
Melanoma in the United States. From 2005 to 2009, the median age at diagnosis for melanoma of the skin was 61, and the median age at death was 68. The age-adjusted incidence rate was 21.0 per 100,000 men and women per year.
Melanoma is a type of cancer that begins in melanocytes (cells that make the pigment melanin). Below are photos of melanoma that formed on the skin. Melanoma can also start in the eye, the intestines, or other areas of the body with pigmented tissues.Often the first sign of melanoma is a change in the shape, color, size, or feel of an existing mole.However, melanoma may also appear as a new mole.elow are photos of melanoma that formed on the skin. Melanoma can also start in the eye, the intestines, or other areas of the body with pigmented tissues. Often the first sign of melanoma is a change in the shape, color, size, or feel of an existing mole. However, melanoma may also appear as a new mole.