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.
Older white men have the highest mortality rates from melanoma. Melanoma is the sixth most common cancer in men and women. Melanoma is the second most common cancer in women ages 20 to 29 in the United States. The incidence of melanoma has increased 690% from 1950 to 2001. Apart from these statistics, if melanoma is detected and treated before it spreads, the 5-year survival rate is 99%.