What is the correct order of biological organization, from smallest to largest?

The correct order of biological organization from smallest to largest is indeed species, population, community, ecosystem, and biome. This hierarchy helps us understand the complexity of life by categorizing biological entities based on their scale and interactions.

At the most granular level, a species refers to a group of organisms that can interbreed and produce fertile offspring. When individuals of the same species interact together in a specific area, they form a population. Moving up from this, a community is made up of multiple populations of different species living together and interacting in a defined area.

Beyond communities, we find ecosystems, which include not only the communities but also the abiotic (non-living) factors in the environment that interact with the biotic components. Finally, biomes are large geographical areas that encompass various ecosystems with similar climatic conditions, characterized by specific plant and animal life.

Understanding this hierarchy is crucial in biology, as it allows scientists to study interactions and relationships among different levels of biological organization and how they contribute to the health of our planet.