The rays cause melanocytes to produce more melanin. However, if the skin is overexposed to UV radiation, the melanocytes may change or experience abnormal growth, which causes cancer [source: Melanoma ]. Melanoma is the most serious form of skin cancer, and it can spread quickly and appear anywhere on the body.V radiation can also cause cataracts and weaken the immune system [source: AAD: Exam ]. But UV radiation is probably most notorious for causing various forms of skin cancer.
For other uses, see Iago (disambiguation). Iago is a fictional character in Shakespeare's Othello (c. 1601â1604). Iago is the play's main antagonist, and Othello's standard bearer. He is the husband of Emilia, who is in turn the attendant of Othello's wife Desdemona. Iago hates Othello and devises a plan to destroy him by making him believe that his wife is having an affair with his lieutenant, Michael Cassio.
Iago plants it in Cassio's lodgings as evidence of Cassio and Desdemona's affair. After he has planted the handkerchief, Iago tells Othello to stand apart and watch Cassio's reactions while Iago questions him about the handkerchief.ago hates Othello for promoting a younger man named Michael Cassio above him, and tells Roderigo that he plans to use Othello for his own advantage. Iago is also angry because he believes, or at least gives the pretence of belief, that Othello slept with his wife Emilia.