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Environment — Social Studies STD 7 — Question

CBSE BoardEnglish MediumSTD 7Social StudiesEnvironment1 Mark
MCQ
Which is not a natural ecosystem?
  • A
    Sea.
  • B
    Lake.
  • ✓
    Aquarium.
  • D
    River.
✓

Answer

Correct option: C.
Aquarium.

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