The folds in the stomach lining are called rugae. On these rugae, you will find a thin line of mucous which helps protect the stomach lining. The innermost layer is called Simple Columnar Epithelium.
Answer: C. A substrate
Explanation:
A substrate is a substance on which an enzyme act. The enzyme acts on substrate X and converts it to Y.
It rains or snows outside (precipitation)
Water that forms from a mixture of heat and cold (condensation)
The sun heats up the water and it turns to vapors and goes into the air
(Evaporation)
