its an open system because it never stops and doesnt have a lemitted time.
The light bulb is a closed system: no mass transfer.
Closed System
Amphibians have closed circulatory system Closed
closed circulatory system
A battery-operated wrist watch is a closed system. A wind-up wrist watch is an open system.
closed
closed!
Closed
Closed
Is the stratification system of south africa closed open or mixed
Platypuses have a closed circulatory system.
closed