Which one of the following is the best description of the term “ecosystem”?
Detailed Explanation:
Ecosystem = Biotic community (living organisms) + Abiotic environment (non-living factors like soil, water, air, sunlight) functioning together.
❌ Option 1: Describes only a biological community (lacks abiotic factors).
❌ Option 2: Defines the biosphere (entire zone of life on Earth).
✅ Option 3: Correctly captures both organisms and their environment as an integrated functional unit.
❌ Option 4: Refers to biota/biodiversity of a region (only living components).
Question 5 of 7 Ecology and Ecosystem
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