sentences: if something is a source of something else then that something else comes from that something & the moon is the sink of matter for death on space ->  energy on earth comes from the sun  energy on earth comes from the sun & inanimate nothing all require matter for crust -> living things require energy from the sun for survival living things require energy from the sun for survival  living things require energy from the sun for survival & if a inanimate place requires something for acids then that inanimate place depends on that something -> living things depend on energy from the sun