No system is completely closed off from its surroundings, but some systems are almost completely closed.

Which represents a system that is almost completely closed?

A.
the African Safari Park

B.
the bird exhibit at the zoo

C.
a tropical fish aquarium

D.
the tropical rainforest exhibit at the botanical gardens

Question

No system is completely closed off from its surroundings, but some systems are almost completely closed. 
 
Which represents a system that is almost completely closed?
 
 A.
the African Safari Park
 
 B.
the bird exhibit at the zoo
 
 C.
a tropical fish aquarium
 
 D.
the tropical rainforest exhibit at the botanical gardens

aaronq · Answer

i would say the aquarium

anonymous · Answer

Thanks, this question didn't make sense at all.

aaronq · Answer

yeah, i didn't think so either.