Which of the following is a closed system?
A) A cave with abundant life that was sealed off from the outside world during a landslide 100 years ago.
B) An underwater ocean cave
C) an aquarium
D) a forest habitat

Question

Quizplus · Accepted Answer

A closed system is one where energy can enter or leave but matter cannot. A cave sealed off from the outside world during a landslide is an example of a closed system because while energy (in the form of heat or light) might still enter or leave, matter does not exchange with the outside environment.

Which of the Following Is a Closed System