Biology for IGCSE & O level - Organisms And Their Environment (Section 4 - No. 20)
Why might a pyramid of numbers be inverted?
If the producers are very large organisms (e.g., trees).
If there are too many decomposers.
If the consumers are parasites.
If the primary consumers are small.
Explanation
Large producers (like trees) can support a large number of smaller primary consumers, leading to an inverted pyramid.
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