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When considering the biomass of a photosynthetic organism for energy transfer studies, which of the following BEST explains why is it necessary to use the dry mass rather than the wet mass to determine productivity?

A

The wet mass can vary widely due to differing concentrations of minerals in soil.

B

The mass that is produced and added to the organism does not include the mass of water.

C

Water has no caloric value.

D

Water plays no role in primary productivity.

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