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It seems as though you did not provide answer choices, but a biomass pyramid starts at the primary producers, which then moves up to primary consumers, secondary consumers, and all the way to detritivores. Primary producers are organisms like plants that convert light energy (or other energy) into biomass that other organisms can use.

Producers are the organisms that is present or found at the bottom of biomass pyramid.

What organism present at the bottom of biomass pyramid?

Producers such as algae and plants are the organisms that would most likely be found at the bottom of biomass pyramid because producers are the organisms that make their own food from using the sun energy and feed other organisms present in that ecosystem.

So we can conclude that producers are the organisms that is present or found at the bottom of biomass pyramid.

Learn more about biomass here: https://brainly.com/question/82777

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