Carbon dioxide with radioactive carbon was bubbled into an illuminated aquarium containing unfiltered pond water. In what order will radioactivity appear in various organisms in the aquarium?

Question

Quizplus · Accepted Answer

Producers (such as algae and aquatic plants) will be the first to take up the radioactive carbon in the form of carbon dioxide during photosynthesis. Herbivores (such as zooplankton and snails) will then consume the producers and acquire the radioactivity. Finally, carnivores (such as fish) will consume the herbivores and acquire the radioactivity. Therefore, the order is producers, herbivores, carnivores.

Carbon Dioxide with Radioactive Carbon Was Bubbled into an Illuminated