Multiple Choice
In an ecosystem, which group of organisms is primarily responsible for breaking down organic material and recycling nutrients?
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48. Ecology
Introduction to Ecology
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Distinct plant communities with little overlap are found in which of the following?
A
Trophic levels
B
Populations
C
Ecosystems
D
Biomes
Verified step by step guidance1
Understand the key terms in the question: A 'biome' is a large geographic area characterized by specific climate conditions, plant communities, and animal species. Examples include tundra, rainforest, and desert. Biomes are distinct from smaller ecological units like populations or ecosystems.
Recognize that 'trophic levels' refer to the hierarchical levels in a food chain, such as producers, primary consumers, and secondary consumers. These are not related to distinct plant communities.
Understand that 'populations' refer to groups of individuals of the same species living in a specific area. While populations can vary, they do not encompass the broad, distinct plant communities described in the question.
Clarify that 'ecosystems' are smaller units within biomes, consisting of living organisms interacting with their physical environment. Ecosystems can overlap and are not as distinct as biomes.
Conclude that 'biomes' are the correct answer because they represent large-scale regions with distinct plant communities and minimal overlap, influenced by climate and geography.
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