sunlight

The sunlight is one of the most important things in the world. Without it, one can't see through eyes. Besides, all the living things need sunlight to get energy to grow and proceed on earth. Nonetheless, if we have too much sunlight, our skin will be burned. The UV within the sunlight has proven to be the main cause of skin cancer. The majority of people still can't recognize the rating of UV index used by health organization. It is basic knowledge that vitamin D can only produce under sunlight. Therefore, we must expose under the sunlight, but can't get too much of it. Today, the sun is high and overwhelming, tread carefully, folks!