Process:  - The saliva breaks down the chemicals in the food a bit, which helps make the food mushy and easy to swallow - Your tongue helps out, pushing the food around while you chew with your teeth - The esophagus moves food from the back of your throat to your stomach - Strong muscles in the walls of the stomach and gastric juices break down food in your stomach - Your stomach moves the food into the intestines to complete digestion -   Perturbation hypothesis: suppose they are buried under fewer layers of soil happens, how will it affect MORE digestion occuring.  Does the supposed perturbation have an effect (direct or indirect) on the process?

no