In what way are cell biologists and molecular biologists similar? Both types of biologists require a PhD in biology. Both types of biologists study animals exclusively. Both types of biologists work in zoos and laboratories. Both types of biologists study microscopic materials.

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.

i thinking chemical change