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Q.
Refer the given diagrammatic representation of trophic
levels in an ecosystem some spaces are marked $A, B, C$
and D. Identify $A, B, C$ and $D.$
Ecosystem
Solution:
In the given diagrammatic representation of trophic
levels in an ecosystem, species marked a s A, B,C and D are
respectively secondary consumer, primary producer, plants
and man/lion