The answer that makes the most sense of the 4 given is "producers".
Out of these answer choices food only travels trough the D) Stomach; small intestines
Answer: Hope this helps
GAS EXCHANGE: the intake of Oxygen and the expulsion of Carbon dioxide. In the capillaries of the alveoli, oxygen travels due to the concentration gradient into those capillaries. Carbon dioxide is then expelled from those capillaries.
RESPIRATORY MEDIUM: is air for animals and water for fish. It is basically the substance through with living animals receive their oxygen.
RESPIRATORY SURFACE: is where the gaseous exchange takes place. The oxygen and carbon dioxide move across the respiratory surface entirely by diffusion.
Answer: the second one
Explanation: I just took the quiz
It could be if thee conditions where right from 9out of 10
