An open system allows for the exchange of matter and energy between the system and outside of the system. A closed system only allows the exchange of energy; not matter.
The light bulb is a closed system: no mass transfer.
Closed System
closed.
Closed System
closed system
closed system
Amphibians have closed circulatory system Closed
closed circulatory system
Odviously-it's-a-closed-system-what-really-come-in-and-out-of-the-earths-crusts...
A battery-operated wrist watch is a closed system. A wind-up wrist watch is an open system.
closed!
Closed