In terms of ecological food pyramids,which of the following is correct ? A)there are more producers in a temperate forest than there are in a grassland. B)a stepped population pyramid is characteristic of most ecosystems in the winter. C)generally,there is a decrease in numbers of organisms at each successive trophic level. D)it is possible to find a stable ecosystem in which secondary consumers outnumber primary consumers.

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This is a basic principle of ecology that is reflected in most ecological food pyramids - as you move up the food chain, there are fewer and fewer organisms at each successive trophic level. This is due to the fact that energy is lost as it is transferred from one level to the next. Therefore, there are generally more producers than herbivores, and more herbivores than predators. Option A is incorrect because grasslands typically have more producers than temperate forests. Option B is incorrect because a stepped population pyramid is not a characteristic of most ecosystems, even in the winter. Option D is incorrect because if secondary consumers outnumbered primary consumers, it would imply that there are more organisms at higher trophic levels than lower trophic levels, which is not sustainable.

In Terms of Ecological Food Pyramids,which of the Following Is