The net dry weight of organic matter that feeds a food chain is
A)not related to net primary productivity.
B)derived from respiration.
C)biomass-or the useful amount of chemical energy.
D)produced to a greater extent in tundra environments than in savannas.
E)in not affected by abiotic ecosystem components

Question

Quizplus · Accepted Answer

The net dry weight of organic matter that feeds a food chain refers to the biomass, which is the useful amount of chemical energy available to the next trophic level. This is directly related to net primary productivity, which is the amount of organic matter produced in an ecosystem, and is not affected by abiotic components such as temperature or precipitation. Respiration is a process that releases energy from organic matter, but it does not contribute to the net dry weight of organic matter available for consumption by other organisms. The amount of organic matter produced in different ecosystems depends on various factors, including climate, vegetation, and soil quality.

The Net Dry Weight of Organic Matter That Feeds a Food