A) Biotic components are almost similar
B) Abiotic components are almost similar
C) Primary and secondary consumers are similar
D) Both biotic 'and abiotic components are different
Correct Answer: D
Solution :[d] Biotic component is referred as living components e.g., grassland ecosystem. Abiotic component is referred as non-living components, e.g., pond ecosystem. Therefore both biotic and abiotic components are different in a comparative study of grassland ecosystem and pond ecosystem.
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