Report Abuse. Another way to find the percentage is to use a proportion. 8/25 = X/100 All you have to do is solve for X. 800 = 25X 800 / 25 = 37. So, 37% of the people say they fear heights. (As the first person pointed out.).
Pigmentation. Heavy pigmentation is one predisposing factor for iris melanoma in cats. Melanocytes are concentrated in the back portion of the iris, behind the cells that give your kitty's eyes their normal color. Dark colored cats have larger numbers of melanocytes everywhere, including the iris.
Darker skinned individuals are more at risk than fair skinned individuals. Estrogen and progesterone sensitivity are also associated with the condition. This means birth control pills, pregnancy, and hormone therapy can all trigger melasma. Stress and thyroid disease have also been postulated to be causes of melasma. Sun exposure can also cause melasma because the ultraviolet rays affect the cells that control pigment (melanocytes).