The following table describes four different systems.
System Description
food web Both matter and energy are exchanged with other systems.
carbon cycle Energy is exchanged with other systems, but the amount of carbon remains constant.
water cycle The amount of water remains constant, but energy is exchanges with other systems.
universe The amount of matter and energy remain constant.
Food web. Both matter and energy are exchanged with other systems.
Explanation:
This is referring to a open system, because it is defined as a system that as external interactions that can be exist trough matter or energy exchange. This kind of systems have an input and an output, having their internal processes to increase or decrease the energy.
