For example, in the fraction 3/4, the numerator, 3, tells us that the fraction represents 3 equal parts, and the denominator, 4, tells us that 4 parts make up a whole. The picture to the right illustrates 3 4 {\displaystyle {\tfrac {3}{4}}} or Â¾ of a cake.
The Causes of Sunburn Blisters. Sunburn blisters are a result of overexposure to the UVA and UVB rays in the sun. â¢ UVA. These harmful rays penetrate deep into the bottom skin layers and damage the production of new skin cells. High doses of UVA rays will cause sunburn blisters.
The study, published in the journal Cancer Epidemiology, Biomarkers & Prevention, showed that people who experienced five or more blistering sunburns between ages 15 and 20 had a 68 percent increased risk of two kinds of skin cancer, basal cell carcinoma and squamous cell carcinoma, as well as an 80 percent higher melanoma risk.