Why is there less biomass at the top of the energy pyramid?

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1 point
Secondary and tertiary consumers aren't included in a biomass pyramid.
Secondary and tertiary consumers have to consume a lot more food to support themselves, so there are fewer of them.
Secondary and tertiary consumers are the same in terms of biomass
none of the above

Secondary and tertiary consumers have to consume a lot more food to support themselves, so there are fewer of them.