Sun is essential to existence. With no sun, then there’s no existence on the planet. The sun’s rays performed for the entire process of photosynthesis in plants. Additionally, the sun’s rays also serves to stimulate your body to create vitamin D, which functions to metabolize calcium, developing strong bones.
Sunlight, in little amount is advantageous for that body. However, excessive sunlight could be dangerous towards the skin. The hazard can increase together with the growing quantity of sun rays onto the skin. The sun’s rays produces radiation that will reach the earth’s surface. Photo voltaic radiation consists of infrared sun rays and visible light and ultraviolet light within radius A and B. Fortunately, the climate soaks up cosmic sun rays, gamma sun rays and X-ray beam that created through the sun.
Continous research about 
About 80% of the human body is water. This makes the water is very important for the human body, if your body lack of water then you will feel weak. You can survive for days simply by 
Many 
Work together to preserve and maintain open communication. If you suspect a problem, ask your teenager what was bothering him. Do not ignore a problem by hoping the problem will go away. It will be easier to overcome while the problem is still minor or light.