Organic chemistry is currently defined as
a) the study of compounds made only by living cells.
b) the study of carbon compounds.
c) the study of vital forces.
d) the study of natural (as opposed to synthetic) compounds.
e) the study of hydrocarbons.

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.

the answer for this question would be d. glaciers

the answer is :