B transverse trust me I did it on a quiz yesterday
The esophagus is a long, thin tube that connects the throat to the stomach. It forms the important piece of the gastrointestinal tract and functions as the conduit for food and liquids that have been swallowed into the throat to reach the stomach
Most enzymes' optimum pH is neutral or close to neutral, like amylase found in saliva, which has an optimal pH = 6.8. Some enzymes prefer a more drastic pH, like pepsin, which can have an optimum pH of 1.7 to 2. Sometimes enzyme pH optima depends on where the enzyme is found.
The aspect of his experimental process which is most important for obtaining reliable results is repeating his data collection many times.
A. the distribution of sand on an ocean floor
