Which of the following combinations can be regarded as sub-systems within the ecosystem?
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- A Food chain, hydrological cycle, mineral nutrient cycle
- B Hydrogical cycle, mineral nutrient cycle, evironmental controls
- C Mineral nutrient cycle, hygrological cycle, ecosystem controls
- D Ecosystem controls, food chain, hydrological cycle
- E Food chain, ecosystem controls, environmental controls
Correct Answer: Option A
Explanation:
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