Answer the following questions. Make sure your answers are 500 words for both questions.
1. Identify the 4 functions of the kidneys. Within your answer, discuss how the processes of excretion and reabsorption occur and the substances involved. Your response should be at least 500 words in length.
2. Discuss the process of digestion by explaining the following:
a. Where does it begin?
b. What are the roles and functions of saliva, the stomach, and the accessory organs?
The response should include a reference list. Double-space, using Times New Roman 12 pnt font, one-inch margins, and APA style of writing and citations.