Answer:b
Explanation:bipolar disorder causes emotional ups and downs
Nitrogen fixation is the conversion of nitrogen gas into a usable form.
Scientists use D- the streak of the mineral when it is in powdered form.
Hope this helps and please say thanks to help me.
I think the answer should be:<span>D) Small Fish and other Aquatic Species
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In food pyramid, the biomass will be much lower in the higher level. In general, every level will have lower of mass/energy compared to the level below. Then, the greatest biomass should be found in the producer class. High-level consumer like bird or mammals should have the lowest mass.
But it was inverted in aquatic, producer become the lowest mass so phytoplankton and zooplankton must be lowest. You should be able to exclude option A and C so it is either option B or D. Since B has zooplankton, I prefer to choose D
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