alleryStart learning →Ecologists work at four specific levels of study. What are those four?
AOrganism, population, biome, ecosystem
BCell, organism, population, community
CPopulation, community, biome, biosphere
DOrganism, population, community, ecosystem
Answer & Solution
Correct answer: D. Organism, population, community, ecosystem
1. The smallest level looks at one individual and how it fits its habitat.
2. Above that sits the population, all individuals of one species in one place.
3. Above that sits the community, the different species in an area and their interactions.
4. The widest level is the ecosystem, which adds the nonliving surroundings to the community.
_Source: OpenStax Biology 1e (CC BY 4.0), Chs 44 and 46, section 44.1 The Scope of Ecology_
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