Final answer:
An open system can exchange both matter and energy with its surroundings, while a closed system can only exchange energy but not matter with its surroundings. The human organism is an example of an open system.
Step-by-step explanation:
An open system can exchange both matter and energy with its surroundings, while a closed system can only exchange energy but not matter with its surroundings. In contrast, an isolated system exchanges neither energy nor matter with the surroundings. The human organism is an example of an open system, as it interacts with the environment by exchanging both matter (such as food and oxygen) and energy (such as heat) with its surroundings.