1. Compare and contrast the two human body systems: The Digestive System and The Excretory System

Answer the following ideas into your writing:

2. How does each system contribute towards homeostasis in an organism? Addressing homeostasis can include either negative feedback loops within a system or how the entire system itself plays into another physiological mechanism (i.e. thermoregulation).

3. What is the importance of surface area to volume ratio in each system? Identify and discuss the important features within each system that contribute to maximizing the surface area to volume ratio.

4. Discuss how substances are transported through each system. This can be at the tissue/organ level and/or at the cellular level.