Answer:
The Earth is indeed affected by ultraviolet (UV) light emitted by the Sun. However, our atmosphere acts as a natural shield that filters out most of the harmful UV rays. Only a small portion of UV radiation, called UVB and UVA, reach the Earth's surface. Excessive exposure to UV radiation can have harmful effects on living organisms, including humans, by causing sunburn, skin cancer, and damage to the eyes. That's why it's essential to protect oneself by using sunscreen, wearing protective clothing, and seeking shade during peak sunlight hours.