question: what does algae play a significant role as in aquatic ecosystems?
choices.text: food life green carbon gills clouds weathering consumers
choices.label: A B C D E F G H
formatted_question: what does algae play a significant role as in aquatic ecosystems? (A) food (B) life (C) green (D) carbon (E) gills (F) clouds (G) weathering (H) consumers