Discussion
Arrange in ascending order of different levels of organisation in ecology of the Earth.
Answer: A
The ascending order is Population - Community - Ecosystem - Biome.
A population is a group of individuals of one species in an area. A community is all the populations of different species living and interacting there. An ecosystem is the community together with its non-living environment. A biome is a large region of similar ecosystems defined by climate and dominant vegetation, such as the tropical rainforest or the tundra.
The other options place community below population, or biome below ecosystem, or reverse the whole sequence.
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