Primary producers (organisms that make their own food from sunlight and/or chemical energy from deep sea vents) are the base of every food chain - these organisms are called autotrophs.
(organisms; make; their own food; from sunlight) (these organisms; are called; autotrophs) Context(these organisms are called,List([147, 173))):(chemical energy from deep sea vents; are; the base of every food chain)
these organisms are called,List([147, 173))
organisms these organisms chemical energy from deep sea vents
make are called are
their own food from sunlight
autotrophs
the base of every food chain