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Definition of population: All the living organisms of same species living in a particular locality constitute the population. Population include various types of organisms which belongs to same species. We can found number of populations on planet Earth. Like human population, ant population, cats population, and many more.

Ecosystem: Two or more biotic communities which interact with the physical or non-living environment together constitute as Ecosystem. Examples: A forest, a mountain, a garden, a pond etc,.. Biome: Group of ecosystem constitute as Biome. A group of ecosystem taken togther in an area hving the same type of climtic conditions is consider as Biome. Biomes can also be consider as major or big sized ecosystem.  Examples: Temperate forests, deserts, evergreen forests, sea, big lakes etc,.. where many ecosystems are found within a biome.