谁帮我回答一下以下几个英文问题啊？

1 The SunSmart UV Alert is a tool you can use to protect yourself from UV radiation. It is based on the Global Solar UV Index, a rating system adopted from the World Health Organisation. The higher the Index value, the greater the potential for damage to your skin.
2 what does UV stand for? UV stands for ultraviolet 紫外线
3 Because Most skin cancers are caused by overexposure to ultraviolet (UV) radiation from the sun or sunbeds
4 Sunsmart is a simple and effective way to reduce your risk of developing skin cancer
5 The sun's ultraviolet (UV) radiation is a great source of vitamin D. We need to maintain adequate vitamin D levels.