A system that allows energy to move in and out but not mass.
A system that cannot exchange matter with its surroundings A system that allows energy to move in and out but not mass ~ Apex
A closed system does not let any matter enter or exit, and no energy enters or exits the system.
1. A closed system is a system which is isolated so that it cannot exchange matter or energy with its surroundings.
Japanese Americans $$$ APEX $$$
Amphibians have closed circulatory system Closed
He closed all the banks and only reopened those with enough money.
closed (apex) ;)
The long term effect of the Stock Market crash was followed by the Great Depression.
in a closed system, neither the energy or matter changes.
Brown bear have a close circulation system
Voting in a CLOSED primary (apex)
Closed System