In a fish tank, the fish are dependent on a filter for water quality, in a low-tech planted aquarium the fish are dependent on the plants.
(the fish; are; dependent on a filter; L:In a fish tank) (the fish; are; dependent on the plants; L:in a low-tech planted aquarium) (the fish; are dependent on; a filter) (the fish; are dependent on; the plants)
the fish the fish the fish the fish
are are are dependent on are dependent on
dependent on a filter L:In a fish tank
dependent on the plants L:in a low-tech planted aquarium
a filter
the plants