試題詳解

5. Net primary production (NPP) is________.
(A) amount of solar energy captured by algae in oceans and converted into the biomass.
(B) total primary production by all primary producers in the ecosystem.
(C) the amount of biomass, produced by autotrophs, which is available to the consumers in the ecosystem.
(D) the amount of biomass produced by heterotrophic consumer organisms.
(E) none of the above.