What I want to know about Melanoma Cancer

There are a lot of things I would like to know about Melanoma Cancer. These are some of the more specific ideas. I would like to know if the sun has an effect of getting skin cancer. I would like to know this because I know some people that go out in the sun and they do not use sun screen. Another question is, is there a cure for this type of cancer. Some types of cancer is incurable, so I would like to know how I can protect myself and others. I have also seen some pictures of dogs while researching this topic so, I would like to know if there is any possibility for any animals to get Melanoma Cancer. I have always heard of elderly people getting skin cancer, is it possible for young adults to get this type of cancer? For my final question, I would like to know if your diet effects the seriousness of your type of cancer? Would it help your case to exercise more or is there no since to?