Why is the measurement of biomass in terms of dry weight more accurate?

Fresh weight can vary due to water content, while dry weight provides a consistent measure of biomass.

The answer is c) Fresh weight can vary due to water content, while dry weight provides a consistent measure of biomass.

Biomass is the total mass of living organisms in a given area. Fresh weight is the weight of living organisms including water content. Dry weight is the weight of living organisms after the water content has been removed.

The water content of living organisms can vary greatly depending on the environment. For example, plants in a humid environment will have a higher water content than plants in a dry environment. This means that the fresh weight of plants in a humid environment will be higher than the fresh weight of plants in a dry environment.

Dry weight, on the other hand, is not affected by the water content of living organisms. This means that dry weight provides a more consistent measure of biomass than fresh weight.

So the answer is (c).