Fill in the Blanks EcosystemsOnline version Definition of ecosystem by Laura Riesco 1 living things non interact living An ecosystem is the physical environment and all the things that live and in it . Biotic factors are the in an ecosystem . Abiotic factors are the - living elements . 2 things non factors living things ecosystem interact physical An is the environment and all the living that live and in it . Biotic factors are the in an ecosystem . Abiotic are the - living elements . 3 the is Abiotic living ecosystem it elements live factors An ecosystem physical environment and all the living things that and interact in . Biotic are the things in an . factors are the non - living .