. "heterotroph"@en-us . . "0"^^ . "100004483"@en-us . . "an organism that depends on complex organic substances for nutrition"@en-us . "00006024-n"^^ . . . "heterotroph"^^ . . . . . . "100006024"^^ . "0"^^ . "an organism that depends on complex organic substances for nutrition"@en-us .