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A system in which neither matter nor enery enters or leaves is a closed system.
allergen
matter can enter from the surroundings, but cannot escape to the surroundings. matter is not allowed to enter from or escape to the surroundings. matter cannot move at all. matter can enter from or escape to the surroundings.
REFRIGERATION
In an open System, matter can enter from or escape to the surroundings (Like a burning match)
energy
A closed system does not allow for energy or matter to enter or leave the system.
Why and how business enter to survive in foreign market
An isolated system does not exchange energy or matter with its surrounding.
In an open system,both energy and matter flow.In an closed system only energy flow.In an isolated system neither energy nor matter flow.
It doesn't matter, you shouldn't smoke anyway.
A closed system does not let any matter enter or exit, and no energy enters or exits the system.