The correct levels of organizational hierarchy listed from least complex to most complex is 1) Organism, 2) Species, 3) Community
Organism is an individual life form that is able to function independently. It is the least complex and includes an individual animal, plant, fungi, bacterium, etc.
Species refers to the collection of related organisms that share common features and can interbreed for reproduction purposes. Their common denominators include genetic attributes,, ecological niche, etc. Examples include homo sapiens and the tiger species.
A community is an association of different species, including plants and animals, that occupy a geographical unit and depend on each other to survive and thrive. It is the most complex among these.For example, a grassland community, or a mangrove community.
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