Understand the Problem
The content in the image is discussing the process of breathing and gas exchange in various animals, highlighting differences in respiratory organs and mechanisms among different species.
Answer
Breathing is the exchange of O2 and CO2.
Breathing, also known as respiration, is the exchange of O2 from the atmosphere with CO2 produced by cells.
Answer for screen readers
Breathing, also known as respiration, is the exchange of O2 from the atmosphere with CO2 produced by cells.
More Information
Different animals use varied mechanisms for breathing based on their habitats. For instance, fish use gills, while mammals use lungs.
Tips
Confusing respiration with cellular respiration is common. The latter refers specifically to the metabolic process of energy production.
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