Answer:
1. Without the Sun's heat and light, the Earth would be a lifeless ball of ice-coated rock. The Sun warms our seas, stirs our atmosphere, generates our weather patterns, and gives energy to the growing green plants that provide the food and oxygen for life on Earth.
2. The sun radiates light to the earth, and part of that light consists of invisible UV rays. When these rays reach the skin, they cause tanning, burning, and other skin damage. UVA rays cause skin aging and wrinkling and contribute to skin cancer, such as melanoma (the most dangerous form of skin cancer).
3. Drink plenty of fluids even if you don't feel thirsty. Schedule outdoor activities carefully. Wear loose, lightweight, light-colored clothing and sunscreen. Pace yourself.
