Matching Pairs Unit 5: EcosystemsOnline version Match the words with the definitions. by Beatriz Dorado 1 Abiotic 2 Ecosystem 3 Population 4 Biotic 5 Individual 6 Community 7 Habitat Word for non-living things and physical environment. One single organism. Word for living things in an ecosystem. Populations interact with each other in a specified area. Specific area where we find living things and non-living things and the interaction between them. Groups formed by organisms that belong to the same specie. Natural home of a living thing.