<span>The question is asking what the the % daily values found on a food label are based on. Those values give us the information for example that some food is 30% of necessary daily calories or that it covers 30% of the need for Vitamin C. This is based on the needs of an average adult person, who needs to consume 2000 calories a day.</span><span />
The two body systems that affect your body while drinking cold water on a hot day is your digestive system and you cardiovascular system. The way the water is affecting your digestive system is , when you drink the water your body is regulating and your body is digesting the water. The way the cardiovascular system is affected by the water is that your body can get over heated and you need something nice and cold to calm your body temperature down.
