Solution:
Animals’ red muscle fibres can operate for longer periods of time because they contain myoglobin, an oxygen-transporting pigment. Because it is connected to the oxygen molecule, it is stored as oxymyoglobin.
16. It is known that red muscle fibres in animals can work for longer periods continuously. How is this possible?
16. It is known that red muscle fibres in animals can work for longer periods continuously. How is this possible?