A closed system does not require contact and interaction with the environment in order to survive, this could also be considered a characteristic. A closed system could also be referred to as an isolated system in thermodynamics.
open: matter and energy can pass freely in and out closed: only energy can pass freely isolated: nothing can pass freely
Amphibians have closed circulatory system Closed
Closed System
Brown bear have a close circulation system
closed system
closed system
closed.
Closed System
closed system
The light bulb is a closed system: no mass transfer.
A closed system is one where there is no mass entering or leaving the system.
The closed system prevented the flys in.