Within the facility are several different biomes -- a rainforest, a million-gallon salt-water ocean, a coastal fog desert, and four other wilderness ecosystems -- which researchers use to do controlled experiments on Earth systems on a relatively large scale.
(Within the facility; are; several different biomes) (researchers; use; to do controlled experiments on Earth systems on a relatively large scale) Context(researchers use,List([169, 184))):(researchers; use to do; controlled experiments on Earth systems)
researchers use,List([169, 184))
Within the facility researchers researchers
are use use to do
several different biomes
to do controlled experiments on Earth systems on a relatively large scale
controlled experiments on Earth systems