Put some hot water, warm water, and cold water in three bowls. just use water from your faucet, and be sure that the hot water is not too hot to touch! place a finger in the hot water and a finger of the other hand in the cold water. after a few seconds, place them both in the warm water.

answer; bodies of water store heat during the day and release it at

the abdomen (less formally called the belly, stomach, tummy or midriff) constitutes the part of the body between the thorax (chest) and pelvis, in humans and in other vertebrates. the region occupied by the abdomen is termed the abdominal cavity. the stomach secretes acid and enzymes that digest food. ridges of muscle tissue called rugae line the stomach. the stomach muscles contract periodically, churning food to enhance digestion. the pyloric sphincter is a muscular valve that opens to allow food to pass from the stomach to the small intestine.