The food web below represents the organisms that make up a freshwater ecosystem.
Suppose humans accidentally introduce a nonnative species of carnivorous bird to the region. If these birds feed exclusively on
large fish, which group or groups of organisms will be negatively impacted by this change?
insects
large fish
carnivorous mammals
ducks
aquatic plants
snails
cranes
small fish
(multiple choice)

After frida stops exercising, she continues to breathe heavily. what is most likely occurring in her body? heavy breathing during exercise has produced an oxygen surplus in her muscles. this oxygen is being transported to her lungs. this is a result of aerobic respiration. heavy breathing during exercise has produced a carbon dioxide surplus in her muscles. lactate is being transported to her liver. this is a result of aerobic respiration. strenuous exercise has caused her body to be in carbon dioxide debt, and she is breathing hard while lactate is transported to the liver. this is a result of anaerobic respiration. strenuous exercise has caused her body to be in oxygen debt, and she is breathing hard while lactate is transported to the liver. this is a result of anaerobic respiration.