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Answer:
Within the discipline of ecology, researchers work at five broad levels, sometimes discretely and sometimes with overlap: organism, population, community, ecosystem, and biosphere.
Explanation:
Levels of ecological heurarchy from simple to the most complex system:
1. Organism - An organism refers to a living thing that has an organized structure, can react to stimuli, reproduce, grow, adapt, and maintain homeostasis.
2. Population - A population is a subset of individuals of one species that occupies a particular geographic area and, in sexually reproducing species, interbreeds
3. Community - is a group or association of populations of two or more different species occupying the same geographical area at the same time.
4. Ecosystem - is a geographic area where plants, animals, and other organisms, as well as weather and landscape, work together to form a bubble of life.
5. Biosphere - relatively thin life-supporting stratum of Earth's surface, extending from a few kilometres into the atmosphere to the deep-sea vents of the ocean