question: what play a significant role as producers in aquatic ecosystems?
choices.text: volume elephants most living things trees animals in Class Aves most organisms simple green plants absorbing nutrients
choices.label: A B C D E F G H
formatted_question: what play a significant role as producers in aquatic ecosystems? (A) volume (B) elephants (C) most living things (D) trees (E) animals in Class Aves (F) most organisms (G) simple green plants (H) absorbing nutrients