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Why are parasite numbers pyramids often inverted, with the bottom level smallest? (Points : 1)
Weegy: Why are parasite numbers pyramids often inverted, with the bottom level smallest? Answer: Because the flow of energy thought a trophic level and invariably shows a decrease along the food chain. Measure in unit e.g. [ J m^-2 yr^-1 :The bars are drawn in proportion to the total energy utilized at each trophic level. Also the productivity of producers in a given area measured for a standard time, and the proportion utilized by consumers can be calculated. All organisms are included regardless of their size, therefore a system say based on an oak tree would be inverted (have a small bottom and bet larger as it goes up trophic levels). Also they do not allow for juvenilles or immature forms. Numbers can be to great to represent accurately. Source: ] (More)
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Asked 12/24/2012 2:34:54 PM
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