11. The behavior of the land
masses over geological time
illustrates the theory of

Continental drift theory

Explanation:

Continental drift theory refers to the movement of land masses over the earth's geological time. This movement n of the masses of the earth allows us to conclude that the continents change their shapes over time and change, including their location in different regions of the planet.

As we already know the movement of the masses of the earth is done in relation to the movement of the tectonic plates.

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.