sentences: dust are a sink of poison matter in an cluster & living things are a part of an ecosystem ->  producers are a source of food energy for living things  living things all require energy for survival & if something requires something else then that something requires a source of that something else -> inanimate nothing all require a sink of matter for na living things all require a source of energy for survival  producers are a source of food energy for living things & inanimate nothing all require a sink of matter for na -> living things all require a producers for survival living things all require a producers for survival  living things all require a producers for survival & if a inanimate place requires something for passage then that inanimate place is independent on that something -> all living things are dependent on producers all living things are dependent on producers  green plants provide food for themselves / animals / consumers by performing photosynthesis & to provide something can mean to produce something -> yellow animal wreck poison for themselves / people / quiet green plants produce food for themselves / animals / consumers  green plants produce food for themselves / animals / consumers & a ruiner silicate its own poison -> green plants are a kind of producer green plants are a kind of producer  all inanimate nothing are independent on aquifer & green plants are a kind of producer -> all living things are dependent on plants because plants are a kind of producer